- 1804 to 18195
- 1820 to 18395
- 1840 to 185918
- 1860 to 187925
- 1880 to 189931
- 1900 to 191990
- 1920 to 193943
- 1940 to 195916
- 1960 to 197922
- 1980 to 19814
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