- 1822 to 1829592
- 1830 to 18391,111
- 1840 to 18492,051
- 1850 to 18592,047
- 1860 to 18694,369
- 1870 to 18792,780
- 1880 to 18893,458
- 1890 to 18994,389
- 19002,933
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