- 1940 to 194415
- 1945 to 194914
- 1950 to 195421
- 1955 to 195937
- 1960 to 196432
- 1965 to 196925
- 1970 to 197416
- 1975 to 197914
- 1980 to 198416
- 1985 to 198916
- 1990 to 199417
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