- 1590 to 159929
- 1600 to 164960
- 1650 to 169968
- 1700 to 1749129
- 1750 to 1799645
- 1800 to 18493,811
- 1850 to 189913,586
- 1900 to 194943,655
- 1950 to 199971,622
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