| Title | Edition | Year of Publication | Contributors | Country of Publication | Possible Copyright Status | Available Online? |
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| Aabenhjærtige kroniker | | 1920 | Anker Kirkeby |  |  |  | | |
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| Abortion: legal or illegal? | | 1933 | Abraham Jacob Rongy | |  | | | |
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| Adolescence and marriage | | 1934 | Robert V. (Robert Vivian) Storer | | | | | |
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| Adolescence | | 1937 | Maurice A. (Maurice Alpheus) Bigelow | | | | | |
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| Adolescence | | 1917 | Stephen Paget | | | | | |
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| Advanced biology | | 1929 | Frank Merrill Wheat, Elizabeth T. Fitzpatrick | | | | | |
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| Advanced biology | | 1936 | Frank Merrill Wheat, Elizabeth T. Fitzpatrick | | | | | |
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| Advice to a young man on choosing a mistress | | 1930 | Benjamin Franklin, Harold D. (Harold David) Carew | | | |  | |
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| Alles um liebe: eine urweltdichtung | | 1912 | Fritz Wittels |  | | | | |
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| Almost a man | | 1907 | Mary Wood-Allen | | | | | |
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| Am lebensquell: ein hausbuch zur geschlechtlichen erziehung, hrsg. vom Dürerbund | | 1926 | Wolfgang Schumann, Dresden Dürerbund | | | | | |
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| American encyclopedia of sex | | 1934 | Adolph Fredrick Niemoeller | | | | | |
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| Analysis of the sexual impulse, love and pain | 2d ed. | 1913 | Havelock Ellis | | | | | |    
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| Anthropological and ethnological studies in the strangest sex acts in modes of love of all races illustrated, oriental, occidental, savage, civilized | | 1935 | Iwan Bloch, Ernst Vogel | | | | | |
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| Anthropological studies in the strange sexual practises of all races in all ages, ancient and modern, oriental and occidental, primitive and civilized | | 1933 | Keene Wallis, Iwan Bloch | | | | | |
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| The antisterility vitamine, fat soluble E | | 1927 | Herbert M. (Herbert McLean) Evans, George O. (George Oswald) Burr |  | | | | |
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| Aphrodisiacs and anti-aphrodisiacs: Three essays on the powers of reproduction; with some account of the judicial "congress" as practiced in France during the seventeenth century | | 1869 | John Camden Hotten, John Davenport | | | | | |
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| The art of love | | 1921 | Walter Franklin Robbie | | | | | |
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| The art of love | | 1926 | Walter Franklin Robie | | | | | |
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| Artificial rejuvenation and voluntary change of sex | | 1926 | Naum Efimowitsch Ischlondsky, Henry Samuel Penn | | | | | |
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| Askese und erotik | | 1926 | Rosa Obermayer Mayreder | | | | | |
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| At the fountain head: five stories on the origin of life for parents and teachers | | 1913 | William Frederick Boos | | | | | |
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| Atlas der Normalen Histologie der Weiblichen Geschlechtsorgane | | 1912 | i.e. Karl Erwin Erwin Hoehl, Robert Meyer, Franz Moraller | | | | | |
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| The attitudes of mothers toward sex education | | 1929 | F. Stuart (Francis Stuart) Chapin, Helen Leland Witmer | | | | | |
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| Bêtes et gens devant l'amour | | 1933 | Fernand Méry |  | | | | |
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| The bankruptcy of marriage | | 1928 | Victor Francis Claverton | | | | | |
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| Be married and like it | | 1937 | Bernarr Macfadden | | | | | |
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| Before marriage: A mother's parting counsel to her son on the eve of his marriage | | 1908 | Mrs. Adolphe Hoffmann, "Mrs. Adolphe Hoffmann Aline Lydia (Rossier) Hoffmann | | | | | |
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| Before you marry | New rev. ed. | 1959 | Sylvanus Milne Duvall | | | | | |
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| Being born | | 1936 | Mrs Frances Bruce Strain | | | | | |
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| Über geschlechtliche Sterilität und ihre Ursachen, nebst einem Anhange über künstliche Befruchtung bei tieren und beim Menschen | | 1912 | Ivar Broman | | | | | |
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| Bestiality: an historical, medical, legal and literary study | | 1933 | A. F. N., Adolph Fredrick Niemoeller | | | | | |
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| Better marriages | | 1928 | Jean Annibal Savignac | | | | | |
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| Bi-sexual love: the homosexual neurosis | | 1922 | Dr., Wilhelm Stekel | | | | | |
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| Bi-sexual man: or, Evolution of the sexes | Scientific ed. | 1912 | Buzzacott, Mary Isabel Wymore, Francis H. Buzzacott | | | | | |
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| Big problems on little shoulders | | 1934 | Mildred Paul. Renz, Carl Renz | | | | | |
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| Biological and medical aspects of contraception: papers and discussions presented at the American Conference on Birth Control and National Recovery, at the Mayflower, Washington, D. C., January 15, 16, 17, 1934 | | 1934 | Margaret Sanger | | | | | |
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| The biological tragedy of woman | | 1932 | Stephanie Ofental, Anton Vitalievich Nemilov | | | | | |
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| Biology of sex for parents and teachers | Rev. | 1922 | Thomas Walton Galloway | | | | | |
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| Biology of sex for parents and teachers | | 1913 | Thomas Walton Galloway | | | | | |
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| Birth control and the state | | 1926 | C. P. (Charles Paton) Blacker | | | | | |
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| Birth control and the state: a plea and a forecast | | 1926 | C. P. (Charles Paton) Blacker | | | | | |
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| Birth control: facts and responsibilities | | 1925 | Adolf Meyer | | | | | |
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| Birth control for saints and sinners | | 1934 | Teunis Oldenburger | | | | | |
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| Birth control in marriage | | 1932 | Norman Carr (pseudonym) | | | | | |
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| Birth control is wrong! | | 1930 | Ignatius Wiley Cox | | | | | |
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| Birth control: its use and misuse | | 1934 | Dorothy Dunbar Bromley, Robert Latou Dickinson | | | | | |
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| Birth control laws, shall we keep them, change them, or abolish them | | 1926 | Mary Ware Dennett | | | | | |
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| Birth control | | 1927 | A. Maude (Agnes Maude) Royden, Johann Ferch, Christian Roland | | | | | |
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| Birth control | | 1930 | Mathew Alexis Liotta | | | | | |
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| Birth-control and eugenics in the light of fundamental ethical principles | | 1928 | Charles Paul Bruehl | | | | | |
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| Blossom babies | | 1913 | Mara L. (Mara Louise) Pratt-Chadwick | | | | | |
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| The boy's venereal peril | | 1928 | | | | | | |
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| Capitalisme et sexualité: le conflit des instincts et les problèmes actuels | | 1932 | Y. Allendy | | | | | |
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| The caricature of love: a discussion of social, psychiatric, and literary manifestations of pathologic sexuality | | 1957 | Hervey M. (Hervey Milton) Cleckley | | | | | |
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| Charakter konstellation mit besonderer berücksichtigung der gleichgeschlechtlichkeit | | 1928 | Karl Guenter Heimsoth | | | | | |
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| Child life and sex hygiene | | 1912 | Otterbein, Otterbein Oscar Smith | | | | | |
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| The child's kingdom of truth | | 1914 | Emma C. Cushman Crummer | | | | | |
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| Childless: a study of sterility | | 1937 | Samuel Gordon Berkow | | | | | |
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| Children by chance or by choice, and some correlated considerations | | 1920 | William Hawley Smith | | | | | |
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| The Christian approach to social morality | | 1913 | Richard C. (Richard Clarke) Cabot | | | | | |
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| Christian social hygiene | | 1919 | Boudinot Seeley | | | | | |
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| Christianity and sex | | 1937 | Richard C. (Richard Clarke) Cabot | | | | | |
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| Christianity and sex problems | 2d ed., rev. and enl. | 1916 | Hugh. Northcote | | | | | |
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| A citizen's handbook of sexual abnormalities and the mental hygiene approach to their prevention: a report of the Governor's Study Commission on Sex Deviates | | 1951 | Samuel Willard Hartwell | | | | | |
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| Clean and strong: a book for young men | [War ed.] | 1917 | F. B. (Frederick Brotherton) Meyer, Elisha Alonzo King | | | | | |
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| The coiled serpent: a philosophy of conservation and transmutation of reproductive energy | | 1939 | Cornelis Johannes Van Vliet | | | | | |
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| Comment les femmes se perdent | | 1927 | Nelly Noury | | | | | |
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| Common-sense sex for young men | | 1927 | Bernard C. Roloff | | | | | |
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| Companionate marriage | | 1927 | Ben B. (Ben Barr) Lindsey, Wainwright Evans | | | | | |
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| Companionate marriage? | | 1929 | Noah C. Gause | | | | | |
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| The conduct of sex: biology and ethics of sex and parenthood in modern life | | 1961 | Lawrence K. (Lawrence Kelso) Frank | | | | | |
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| Confidential chats with boys | | 1911 | William Lee Howard | | | | | |
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| Confidential chats with girls | | 1911 | William Lee Howard | | | | | |
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| Connaissance de la vie sexuelle | | 1930 | Pierre Vachet | | | | | |
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| The control of sex infections | | 1921 | James Bayard Clark | | | | | |
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| Courte histoire du célibat ecclésiastique | | 1929 | Albert Houtin | | | | | |
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| Creative force in man | | 1933 | Emil. Markt | | | | | |
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| The crime of silence | | 1915 | Orison Swett Marden | | | | | |
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| Critique of love | | 1929 | Fritz Wittels | | | | | |
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| A critique of sublimation in males: a study of forty superior single men | | 1933 | William Sentman Taylor | | | | | |
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| curiosities of erotic physiology | | 1932 | John Davenport | | | | | |
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| Das geschlechtsleben des menschen | 2. verb. aufl. | 1914 | Gerhard Hahn | | | | | |
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| Das liebes- und geschlechtsleben des menschen mit berücksichtigung der unkeuschheit sowie aller geheimen krankheiten und ihrer verhütung | | 1928 | Reinhold Gerling | | | | | |
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| Das Weib in den Religionen der Völker unter Berücksichtigung der einzelnen Kulte und Sitten | 2. vollständig neu bearb. Aufl. | 1912 | Rudolf Quanter | | | | | |
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| Das Westen der Geschlechstliebe | | 1930 | active1928-1931. Helmut Wagner | | | | | |
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| De erotiek in het huwelijk | | 1928 | Theodoor H. van de (Theodoor Hendrik) Velde |  | | | | |
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| De vruchtbaarheid van het huwelijk en haar opzettelijke beinvoeding | | 1930 | Theodoor H. van de (Theodoor Hendrik) Velde | | | | | |
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| Debate between Judge Ben Lindsey and G. C. Brewer on "Companionate marriage" | | 1928 | Ben B. (Ben Barr) Lindsey, Grover Cleveland Brewer | | | | | |
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| Der geschlectsverkehr der ledigen | | 1928 | Reinhold Gerling | | | | | |
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| Dermatology and syphilology for nurses: including social hygiene | | 1930 | John Hinchman Stokes | | | | | |
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| Dermatology and syphilology for nurses: including social hygiene | | 1935 | John Hinchman Stokes | | | | | |
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| Det sexuelle spørgsmaal: en naturvidenskabelig, psychologisk, hygiejnisk og sociologisk studie for de dannede | | 1913 | Karna Birk Grønbech, Auguste Forel | | | | | |
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| Dictionary of erotic literature | | 1962 | Harry E. Wedeck | | | | | |
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| Die biologischen grundlagen der sekundären geschlechtscharaktere | | 1913 | Siegfried Grosz, Julius Tandler | | | | | |
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| Die drei Stufen der Erotik: mit fünf Abbildungen | | 1913 | Emil Lucka | | | | | |
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| Die ehe | | 1927 | Max Marcuse | | | | | |
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| Die erotische Freiheit | | 1928 | Otto Flake | | | | | |
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| Die fruchtbaren und unfruchtbaren tage der frau | | 1934 | Willis Knapp Jones, Herbert Karner |  | | | | |
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| Die Fruchtbarkeit in der Ehe und ihre wunschgemässe Beeinflussung | | 1929 | Theodoor H. van de (Theodoor Hendrik) Velde |  | | | | |
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| Die geschlechtliche erziehung: beiträge zur grundlegung einer gesunden sexualpädagogik | | 1929 | Joseph Schröteler | | | | | |
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| Die Homosexualität des Mannes und des Weibes | | 1913 | Magnus Hirschfeld | | | | | |
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| Die ideal-ehe, moralisch einwandfreier und sicherer weg natur̈licher empfängnisverhütung nach dr: K. Ogino u. prof. dr | | 1932 | Peter Liesenfeld | | | | | |
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| Die Kastrationsangst des Weibes | | 1934 | Sandor Rado | | | | | |
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| Die liebe als kunst | | 1932 | Margarete Kaiser | | | | | |
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| Die liebe vor der ehe und ihre fehlentwicklungen | | 1925 | Oskar Robert Pfister | | | | | |
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| Die mangelhafte geschlechtsempfindung des weibes | 3. verm. und verb. aufl. | 1919 | Otto. Adler | | | | | |
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| Die mangelhafte geschlechtsempfindung des weibes | 2. verm. und verb. aufl. | 1911 | Otto. Adler | | | | | |
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| Die moderne frau: über die menschwerdung des wiebes | | 1927 | Siegmund Feilbogen, Paul Bousfield |  | | | | |
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| Die neue sexualmoral und das geburtenproblem unserer tage | | 1928 | Julius Wolf | | | | | |
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| Die neugeburt der ehe | | 1932 | Cyril Hume, Hans Sterneder | | | | | |
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| Die Onanie; vierzehn Beiträge zu einer Diskussion der "Wiener Psychoanalytischen Vereinigung" | | 1912 | Bernhard Dattner | | | | | |
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| Die pubertätsdrüse und ihre wirkungen | | 1919 | Alexander Lipschütz | | | | | |
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| Die rolle der erotik in der männischen gesellschaft: ein theorie der menschlichen staatsbildung nach wesen und wert | | 1921 | Hans Blüher | | | | | |
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| Die sexual-revolution: der kampf um die staatliche bekämpfung der geschlechskrankheiten, die lösung des sexualproblems mittels des "diskretionismus" d. h. der allgemeinen, gleichen, diskreten anzeige-und behandlungspflicht (ohne namensnennung) an ein zum strengsten stillschweigen verpflichtetes gesundheitsamt | | 1921 | Moritz Schönmann, W. H. (Wilhelm Heinrich) Dreuw | | | | | |
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| Die sexualnot der erwachsenen | | 1928 | Max. Hodann | | | | | |
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| Die tragödie der frau: das problem der reiferen jahre | | 1928 | Alfred Dannhauser | | | | | |
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| Die vollkommene ehe: eine studie über ihre physiologie und technik | | 1926 | Theodoor H. van de (Theodoor Hendrik) Velde | | | | | |
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| ... Die Weiberherrschaft in der Geschichte der Menschheit ... | | 1913 | Alfred Kind, Eduard Fuchs | | | | | |
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| Die weiblichen sexualhormone in ihren beziehungn zum genitalzyklus und zum hypophysenvorderlappen | | 1933 | Carl. Clauberg | | | | | |
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| The doctor looks at love and life | | 1926 | Joseph Collins | | | | | |
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| Dos geschlecht leben fun der frau: Sexual life of the woman | | 1928 | William Ostrowsky | | | | | |
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| The duality of the Bible, or, The scriptural church and Christianity | | 1917 | Sidney C. (Sidney Calhoun) Tapp | | | | | |
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| Éducation sexuelle | | 1930 | L. (Louis) Baudry de Saunier | | | | | |
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| Dust or diamonds: "domestic tranquility" | | 1932 | J DanBenner, James Daniel Benner | | | | | |
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| Educating to purity: thoughts on sexual teaching and education proposed to clergymen, parents and other educators | | 1912 | Franz Krus, Dr. Francis Krus, Cyril Van der Donckt | | | | | |
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| Education for responsible parenthood | 1950 revision. | 1950 | | | | | | |
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| The effect of segregation on the sex behavior of the white rat: as measured by the obstruction method | | 1928 | Marion Jenkins | | | | | |
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| The effects of gonadectomy, vasotomy, and injections of placental and orchic extracts on the sex behavior of the white rat | | 1929 | Henry Wieghorst Nissen | | | | | |
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| The ego in love and sexuality | | 1960 | Edrita Fried | | | | | |
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| Egteskapets helselære | | 1925 | Kristiane Skjerve |  | | | | |
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| Eheberatung als aufgabe der kommunen | | 1932 | Friedrich Karl. Scheumann | | | | | |
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| Eine arabisch-byzantinische quelle des Dialogs Hermippos | | 1912 | Richard Reitzenstein, Abū Ma"shai, Franz Johannes Boll | | | | | |
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| El sexo el hominismo y la natalidad | | 1919 | |  | | | | |
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| Emotional adjustment in marriage | | 1937 | Le Mon Clark | | | | | |
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| The emotional self | | 1934 | Sándor Lorand, Arthur Zaidenberg | | | | | |
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| Encyclopædia of sexual knowledge | | 1934 | Norman Haire, Drs. A. Costler, Arthur Koestler | | | | | |
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| Encyclopaedia of sexual knowledge | | 1934 | Norman Haire, Alfrède Costler | | | | | |
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| Encyclopaedia sexualis: a comprehensive encyclopaedia-dictionary of the sexual sciences | | 1935 | Victor Robinson | | | | | |
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| Endocrine glands and sexual problems | | 1928 | Albert A. Lowenthal | | | | | |
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| Engagement and marriage | | 1913 | Orrin Giddings Cocks | | | | | |
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| The enhanted road | | 1927 | Janet Smalley, Edith Howes | | | | | |
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| Eonism and other supplementary studies | | 1928 | Havelock Ellis | | | | | |
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| Erkenntnisgeist und muttergeist: eine soziosophie der geschlechter | | 1933 | Ernst Bergmann | | | | | |
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| Erogeneity and libido: addenda to the theory of the psychosexual development of the human | | 1957 | Robert Fliess | | | | | |
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| The erotic motive in literature | | 1919 | Albert Mordell New York, Albert Mordell | | | | | |
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| Erotik und schaffen | | 1934 | Siegfried Placzek | | | | | |
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| Erotikens etik med særligt henblik paa monogamiets mulighed i vor tid | | 1926 | April1 Carl Jørgensen | | | | | |
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| Erotikk og livsanskuelse | | 1928 | Richard Eriksen | | | | | |
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| The erotikon: being an illustrated treasury of scientific marvels of human sexuality | | 1933 | Augustin Cabanès, Dr. Augustin Cabanes, Robert Meadows | | | | | |
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| Erroneous human laws and the social evils | 1st ed. | 1921 | Ladislaus R. Slominski | | | | | |
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| Essays on sex | | 1949 | Henry McClure Young | | | | | |
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| The eternal question? | | 1926 | Michael Fabian Teehan | | | | | |
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| The eternal question | | 1928 | Michael Fabian Teehan | | | | | |
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| Ethical sex relations | | 1926 | Clayton S. Whitehead, Charles A. Hoff | | | | | |
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| Ethical sex relations | | 1928 | Clayton S. Whitehead, Charles A. Hoff | | | | | |
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| Ethical sex relations | | 1929 | John Jacob Stoll, Clayton S. Whitehead, Charles A. Hoff | | | | | |
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| Ethics in sex conduct: a manual on youth, sex and marriage | | 1948 | Clarence J. (Clarence James) Leuba | | | | | |
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| The ethics of sexual acts | | 1934 | Norman Haire, René. Guyon, J. C. (John Carl) Flugel | | | | | |
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| Ethnological and cultural studies of the sex life in England as revealed in its erotic and obscene literature and art | | 1934 | Iwan Bloch, Richard Deniston | | | | | |
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| Ethnological and cultural studies of the sex life in England as revealed in its erotic and obscene literature and art | | 1934 | Iwan Bloch, Richard Deniston | | | | | |
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| Eugenics and sex harmony | | 1933 | Herman H. (Herman Harold) Rubin | | | | | |
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| Eugenics and sex harmony | | 1936 | Herman H. (Herman Harold) Rubin | | | | | |
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| Eugenics and sex relations for men and women: by Dr. Marc Henry Frank | | 1932 | Marc Henry Frank | | | | | |
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| Eulis, affectional alchemy | | 1930 | R. Swinburne (Reuben Swinburne) Clymer, Paschal Beverly Randolph | | | | | |
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| Every boy's book | | 1912 | George F. (George Frank) Butler | | | | | |
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| The evolution of life | | 1934 | Joseph H. Greer | | | | | |
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| Factors in the sex life of seven hundred psychopathic women | | 1935 | Frances Marie Strakosch | | | | | |
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| Factors in the sex life of twenty-two hundred women | | 1929 | Katharine Bement Davis | | | | | |
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| Facts and frauds in woman's hygiene: a medical guide against misleading claims and dangerous products | | 1936 | Rachel Lynn. Palmer, Sarah Koslow Greenberg | | | | | |
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| Facts for childless couples | 2d ed. | 1960 | Edwin Crowell Hamblen | | | | | |
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| Facts for the married | | 1912 | William Lee Howard | | | | | |
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| Falsche scham | | 1926 | Curt Thomalla | | | | | |
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| False modesty | | 1912 | Edith Belle Lowry | | | | | |
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| The family and the new democracy: a study in social hygiene | | 1920 | Anna Mary Galbraith | | | | | |
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| Fantasia of the unconscious | | 1922 | D. H. (David Herbert) Lawrence | | | | | |
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| The father and his boy: the place of sex in manhood making | | 1921 | Thomas Walton Galloway | | | | | |
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| Father and son | | 1913 | Winfield Scott Hall | | | | | |
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| Father and son | | 1913 | Winfield Scott Hall | | | | | |
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| Father, mother, and babe | | 1916 | Mrs Annie (Jenness) Miller, Anna Jenness-Miller | | | | | |
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| Female endocrinology | | 1944 | Jacob Hoffman | | | | | |
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| The female man: the male woman, the yellow streak | | 1918 | Barton Lincoln Baker | | | | | |
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| The female sex hormone | | 1929 | Robert Tilden Frank | | | | | |
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| Feminismens agitation i Danmark | | 1922 | Hans S. (Hans Sophus) Kaarsberg | | | | | |
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| Fertility in men: a clinical study of the causes, diagnosis and treatment of impaired fertility in men | | 1944 | Robert Sherman Hotchkiss | | | | | |
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| Fertility in women: causes, diagnosis and treatment of impaired fertility | | 1944 | Samuel L. (Samuel Lewis) Siegler | | | | | |
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| Fewer and better babies: birth control | | 1928 | William J. (William Josephus) Robinson, A. Jacobi | | | | | |
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| Florilège des conteurs galants du XVIIIième siècle | | 1932 | Adrien Bagarry | | | | | |
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| For legalized birth control | | 1934 | Margaret Sanger, Helena Huntington Smith, Bruce Allyn Findlay | | | | | |
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| Forbidden sexual behavior and morality: an objective re-examination of perverse sex practices in different cultures | | 1962 | Robert E. L. Masters | | | | | |
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| Foundations of feminism | | 1921 | Avrom Barnett | | | | | |
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| Foundations of happiness in marriage | | 1934 | Leland Foster Wood | | | | | |
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| Four great encyclicals | | 1932 | Leo, Pius | | | | | |
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| Frauen, aus dem tagebuch einer ärztin | | 1932 | Else. Kienle | | | | | |
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| Freshman hygiene: personal and social problems of the college student | | 1926 | Raymond Cooley Bull, Stanley Judson Thomas | | | | | |
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| Frigidity in woman in relation to her love life | | 1926 | Wilhelm Stekel | | | | | |
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| Frigidity in women | | 1936 | Eduard Hitschmann, Dr. Edmund Bergler, Edmund Bergher | | | | | |
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| Fruchtbarkeit und Vermehrung | | 1927 | Heinrich Schmidt | | | | | |
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| Fundamentals of human reproduction | 1st ed. | 1948 | Edith Louise Potter | | | | | |
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| The future of marriage in western civilisation | | 1936 | Edvard Alexander Westermarck | | | | | |
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| The future of marriage in western civilisation | | 1936 | Edward Westermarck | | | | | |
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| Genealogy of sex | | 1934 | Eden Paul, Cedar Paul, Curt Egon Thesing | | | | | |
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| Generations of Adam | | 1930 | Abraham Leo Wolbarst | | | | | |
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| Genital abnormalities: hermaphroditism & related adrenal diseases | | 1937 | Hugh Young | | | | | |
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| Geschlecht und Gesellschaft | | 1928 | active1928-1931. Helmut Wagner | | | | | |
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| Geschlecht und liebe in biologischer und gesellschaftlicher beziehung | | 1932 | Max Hodann | | | | | |
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| Geschlecht und sitte im leben der völker | | 1912 | A. (August) Seidel | | | | | |
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| Geschlechtsleben und gesundheit | | 1932 | Frau Hertha (Pataky) Riese | | | | | |
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| Geschlechtsleben und sexuelle hygiene | | 1932 | Abraham Buschke, Friedrich Jacobsohn, Fritz Blankenfeld | | | | | |
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| Glückhafte geburt! | | 1934 | Theodoor H. van de (Theodoor Hendrik) Velde | | | | | |
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| The glands regulating personality: a study of the glands of internal secretion in relation to the types of human nature | | 1921 | Louis Berman | | | | | |
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| The glands regulating personality: a study of the glands of internal secretion in relation to the types of human nature | | 1928 | Louis Berman | | | | | |
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| God's children | | 1921 | Mrs Emma Lieber, Will Vawter | | | | | |
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| The gods of generation: a history of phallic cults among ancients & moderns | | 1933 | J.-A. (Jacques-Antoine) Dulaure, A. F. (Adolph Fredrick) Niemoeller | | | | | |
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| Growing into maturity | | 1939 | Katharine Bruderlin Crisp | | | | | |
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| Growing up: the story of how we became alive, are born and grow up | | 1928 | Karl De Schweinitz, Karl | | | | | |
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| Growing up: the story of how we become alive, are born and grow up | | 1935 | Karl De Schweinitz, Karl | | | | | |
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| Growth including reproduction and morphological development | | 1962 | Philip L. Altman, Dorothy Dittmer Katz | | | | | |
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| Handbuch der sexualwissenschaften, mit besonderer berücksichtigung der kulturgeschichtlichen beziehungen | | 1912 | Havelock Ellis, Seved Ribbing, Albert Moll | | | | | |
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| Handschrift und sexualitat: mit 223 schriftproben | | 1932 | Karl Besser, Hans Jacoby | | | | | |
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| Handwörterbuch der Sexualwissenschaft: Enzyklopädie der natur- und kulturwissenschaftlichen Sexualkunde des Menschen | | 1924 | Max Marcuse | | | | | |
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| Happiness in marriage | | 1926 | Margaret Sanger | | | | | |
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| Harmonics of evolution: the philosophy of individual life, based upon natural science | | 1928 | Florence Huntley | | | | | |
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| Harmonics of evolution: the philosophy of individual life, based upon natural science, as taught by modern masters of the law | 12th ed. | 1913 | Florence Huntley, Florence Huntley | | | | | |
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| Harmonics of evolution: the struggle for happiness, and individual completion through the principle of polarity or affinity | | 1929 | J. E. (John Emmett) Richardson, Florence Huntley | | | | | |
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| Helps to purity: a frank, yet reverent instruction on the intimate matters of personal life for adolescent girls | | 1929 | Fulgence Meyer | | | | | |
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| Helseære for piker fra fjorten til seksten år | | 1927 | Kristiane Skjerve | | | | | |
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| Heredity and parenthood | | 1929 | Samuel Christian Schmucker | | | | | |
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| Heredity and sex | | 1913 | Thomas Hunt Morgan | | | | | |
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| Herself; talks with women concerning themselves | | 1911 | Edith Belle Lowry | | | | | |
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| Het volkomen huwelijk: een studie omtrent zijn physiologie en zijn techniek | | 1926 | Theodoor H. van de (Theodoor Hendrik) Velde | | | | | |
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| Higher race development: a course of instructions on the right use of sex | | 1919 | R. Swinburne (Reuben Swinburne) Clymer | | | | | |
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| Himself: talks with men concerning themselves | | 1912 | E. B. (Edith Belle) Lowry, Richard J. (Richard Jay) Lambert | | | | | |
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| The Hindu art of love | | 1932 | Edward Windsor | | | | | |
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| The Home counsel library: up-to-date and scientific | | 1924 | Charles William Eliot, Wm. A. McKeever, Mrs. Louise Francis Spaller | | | | | |
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| The homosexual neuroses | | 1922 | Wilhelm Stekel, James S. (James Samuel) Van Teslaar, Dr. William Stekel | | | | | |
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| The honey-comb | | 1920 | Kuth Van Saun, Ruth. Van Saun | | | | | |
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| Hormone des Ovariums und des Hypophysenvorderlappens: Untersuchungen zur Biologie und Klinik der weiblichen Genitalfunktion | | 1935 | B. (Bernhard) Zondek | | | | | |
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| The how and why of life | | 1932 | Michael Smith, Katharine Burton, Emma Wheat Hastings Gillmore | | | | | |
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| How can we teach about sex? | | 1946 | Benjamin C. (Benjamin Charles) Gruenberg | | | | | |
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| How I came to be; the autobiography of an unborn infant | | 1926 | Armenouhie Tashjian Lamson | | | | | |
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| How life begins: the story of how nature conceives and bears her children | | 1935 | George L. Bird | | | | | |
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| ... How shall I tell my child! | | 1912 | Rose Woodallen Chapman | | | | | |
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| How to protect your child from the sex criminal | | 1950 | Earl R. Biggs | | | | | |
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| How to tell the story of life | | 1913 | Thomas Washington Shannon | | | | | |
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| How to tell your child about sex | [1st ed. | 1949 | James L. Hymes | | | | | |
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| Human breeding and survival: population roads to peace or war | [Rev. ed.] | 1947 | Guy Irving Burch, Elmer Pendell | | | | | |
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| Human fertility and problems of the male | | 1950 | Edmond J. (Edmond John) Farris | | | | | |
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| Human sex anatomy | | 1933 | Robert Latou Dickinson | | | | | |
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| Human sterility; causation, diagnosis, and treatment: a practical manual of clinical procedure | | 1934 | Samuel Raynor Meaker | | | | | |
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Public Domain Books