- 1940 to 194434
- 1945 to 194935
- 1950 to 195431
- 1955 to 195930
- 1960 to 196428
- 1965 to 196928
- 1970 to 197429
- 1975 to 197929
- 1980 to 19840
- 1985 to 19890
- 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