- 1825 to 1829 375
- 1830 to 1834 496
- 1835 to 1839 845
- 1840 to 1844 1,537
- 1845 to 1849 1,076
- 1850 to 1854 1,327
- 1855 to 1859 1,427
- 1860 to 1861 2,158
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