- 1940 to 194420
- 1945 to 194923
- 1950 to 195414
- 1955 to 195915
- 1960 to 196414
- 1965 to 196914
- 1970 to 197413
- 1975 to 197913
- 1980 to 198414
- 1985 to 198914
- 1990 to 19942
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