- 1940 to 19441
- 1945 to 19492
- 1950 to 19541
- 1955 to 19592
- 1960 to 19640
- 1965 to 19691
- 1970 to 19741
- 1975 to 19791
- 1980 to 19821
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