- 1815 to 1819350
- 1820 to 1824434
- 1825 to 1829418
- 1830 to 1834540
- 1835 to 1839890
- 1840 to 18441,600
- 1845 to 18491,139
- 1850 to 18541,392
- 1855 to 18591,504
- 1860 to 18643,296
- 18651,844
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