- 1918 to 19192
- 1920 to 19240
- 1925 to 19290
- 1930 to 19341
- 1935 to 19390
- 1940 to 19440
- 1945 to 19494
- 1950 to 19516
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