- 1852 to 18531,057
- 1854 to 18551,064
- 1856 to 18571,133
- 1858 to 18591,202
- 1860 to 18612,300
- 1862 to 18632,162
- 1864 to 18652,194
- 18661,742
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