- 1936 to 19395
- 1940 to 19441
- 1945 to 194935
- 1950 to 19540
- 1955 to 19591
- 1960 to 196421
- 1965 to 196922
- 1970 to 19741
- 1975 to 19792
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