- 1590 to 159931
- 1600 to 164963
- 1650 to 169980
- 1700 to 1749134
- 1750 to 1799665
- 1800 to 18493,897
- 1850 to 189914,209
- 1900 to 194945,066
- 1950 to 199972,198
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