- 1700 to 171982
- 1720 to 173970
- 1740 to 175994
- 1760 to 1779178
- 1780 to 1799485
- 1800 to 1819903
- 1820 to 18391,322
- 1840 to 18593,231
- 1860 to 18796,033
- 1880 to 18996,095
- 1900 to 19114,807
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