| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? |
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| Delbridge 10 per cent interest calculator | | 1912 | Author | |  | |  | |
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| Delbridge 2.1/2 point calculator | | 1920 | Author | | | | | |
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| Delbridge 2 1/2 point calculator, 22 cents to 22.97 1/2 cents | | 1917 | Author | | | | | |
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| Delbridge 2 1/2 point calculator, 24 cents to 24.97 1/2 cents | | 1917 | Author | | | | | |
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| Delbridge 2.1/2 point calculator 31c to 31.97.1/2 | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator 33c to 33.97.1.̀ | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator 34c to 34.97.1/2 | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1920 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1918 | Author | | | | | |
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| Delbridge 2.1/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 21/2 point calculator .00c to .971/2 | | 1918 | Author | | | | | |
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| Delbridge 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge 3 per-cent interest book and with time maturity table | | 1920 | Author | | | | | |
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| Delbridge 3% savings bank interest tables | | 1907 | Author | | | | | |
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| Delbridge 4 per cent interest book and with time maturity table | | 1920 | Author | | | | | |    
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| Delbridge 7 per-cent interest book | | 1918 | Author | | | | | |
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| Delbridge calculating tables | | 1918 | Author | | | | | |
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| Delbridge calculating tables, 24 cents to 24.95 cents | | 1917 | Author | | | | | |
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| Delbridge calculating tables 31c to 31.95 | | 1918 | Author | | | | | |
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| Delbridge calculating tables 32c to 32.95 | | 1918 | Author | | | | | |
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| Delbridge calculating tables 33c to 33.95 | | 1918 | Author | | | | | |
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| Delbridge calculating tables, 38 to 38.95 | | 1918 | Author | | | | | |
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| Delbridge calculating tables | | 1918 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1918 | Author | | | | | |
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| Delbridge calculating tables | | 1918 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculating tables | | 1917 | Author | | | | | |
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| Delbridge calculator | | 1918 | Author | | | | | |
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| Delbridge cotton seed | | 1919 | Author | | | | | |
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| Delbridge cotton seed calculator, small size | | 1917 | Author | | | | | |
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| Delbridge cotton seed calculator, small size | | 1917 | Author | | | | | |
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| Delbridge freight calculator | | 1920 | Author | | | | | |
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| Delbridge freight calculator | | 1920 | Author | | | | | |
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| Delbridge frieght calculator | | 1920 | Author | | | | | |
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| Delbridge hay, coal and cotton seed calculator | | 1919 | Author | | | | | |
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| Delbridge hay, coal and cotton seed calculator | | 1911 | Author | | | | | |
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| Delbridge hay, coal and cotton seed calculator | | 1911 | Author | | | | | |
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| Delbridge hundredweight calculator | | 1919 | Author | | | | | |
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| Delbridge hundredweight calculator | | 1918 | Author | | | | | |
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| Delbridge pocket size 10 per-cent interest book | | 1920 | Author | | | | | |
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| Delbridge pocket size 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge pocket size, 21/2 point calculator | | 1917 | Author | | | | | |
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| Delbridge pocket size 31/2 per-cent interest book and with time maturity table | | 1920 | Author | | | | | |
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| Delbridge pocket size 5 point calculator | | 1918 | Author | | | | | |
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| Delbridge round weights | | 1917 | Author | | | | | |
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| Delbridge's multiplication table: showing the result of the multiplication of any number from 1 to 200,000 by any number from 1-8th of 1, to 100 | | 1916 | Author | | | | | |
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| Delbridge small size 5 point calculator | | 1917 | Author | | | | | |
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| Delbridge small size 5 point calculator, 15 cents to 30 cents | | 1917 | Author | | | | | |
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| Delbridge unearned interest tables for 1 day on basis of 360 days to the year | | 1919 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator 1/8th of 1c to 30c | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wholesaler's calculator | | 1915 | Author | | | | | |
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| Delbridge wonderful interest tables, 1 day to 168 days | | 1916 | Author | | | | | |
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| Delbridge wonderful interest tables, 1 day to 96 days | | 1916 | Author | | | | | |
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| The tragedy, the farce and the humbug of the courts | | 1916 | Author | | | | | |
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| Williams' lightning calculator and rapid-method figuring | | 1919 | Author | | | | | |
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Public Domain Books