Keffer, Mary
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 2926
Mary Keffer Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Our early wild flowers: a study of the herbaceous plants blomming in early spring in the northern states | 1916 | Author | |  | |  | | 
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| Our northern autumn: a study of its characteristic flowers | 1920 | Illustrator | | | |  | |   
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| The wayside flowers of summer: a study of the conspicuous herbaceous plants blooming upon our northern roadsides during the months of July and August | 1917 | Illustrator | | | | | |
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