- 1785 to 1789172
- 1790 to 1799383
- 1800 to 1809499
- 1810 to 1819573
- 1820 to 1829576
- 1830 to 18391,035
- 1840 to 18491,997
- 1850 to 18592,017
- 1860 to 18674,023
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