- 1800 to 18091
- 1810 to 18191
- 1820 to 18291
- 1830 to 18391
- 1840 to 18491
- 1850 to 18591
- 1860 to 18691
- 1870 to 18791
- 1880 to 18891
- 1890 to 18991
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