- 1852 to 18531,039
- 1854 to 18551,043
- 1856 to 18571,111
- 1858 to 18591,180
- 1860 to 18612,243
- 1862 to 18632,110
- 1864 to 18652,149
- 1866 to 18671,881
- 1868 to 18691,713
- 1870 to 18711,316
- 1872 to 18731,365
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