- 1770 to 17791
- 1780 to 17992
- 1800 to 181914
- 1820 to 183919
- 1840 to 185975
- 1860 to 1879145
- 1880 to 1899177
- 1900 to 191976
- 1920 to 193919
- 1940 to 19597
- 1960 to 19621
The preservation of the Duke University Libraries Digital Collections and the Duke Digital Repository programs are supported in part by the Lowell and Eileen Aptman Digital Preservation Fund