- 1822 to 1829531
- 1830 to 18391,044
- 1840 to 18492,009
- 1850 to 18592,037
- 1860 to 18694,360
- 1870 to 18792,772
- 1880 to 18893,450
- 1890 to 18994,229
- 19002,776
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