- 1822 to 1829592
- 1830 to 18391,112
- 1840 to 18492,053
- 1850 to 18592,054
- 1860 to 18694,371
- 1870 to 18792,782
- 1880 to 18893,458
- 1890 to 18994,390
- 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