- 1852 to 18531,064
- 1854 to 18551,070
- 1856 to 18571,141
- 1858 to 18591,205
- 1860 to 18612,307
- 1862 to 18632,171
- 1864 to 18652,202
- 18661,750
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