- 1938 to 19392
- 1940 to 194410
- 1945 to 194919
- 1950 to 19540
- 1955 to 19590
- 1960 to 19640
- 1965 to 19690
- 1970 to 19740
- 1975 to 19790
- 19801
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