- 1940 to 194442
- 1945 to 194944
- 1950 to 195429
- 1955 to 195935
- 1960 to 196429
- 1965 to 196931
- 1970 to 197429
- 1975 to 197929
- 1980 to 198431
- 1985 to 198931
- 1990 to 199434
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