- 1801 to 18198
- 1820 to 18398
- 1840 to 185935
- 1860 to 187960
- 1880 to 189926
- 1900 to 191915
- 1920 to 193918
- 1940 to 19591
- 1960 to 19791
- 1980 to 19852
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