- 1930 to 19341
- 1935 to 19391
- 1940 to 19441
- 1945 to 19491
- 1950 to 19541
- 1955 to 19591
- 1960 to 19641
- 1965 to 19691
- 1970 to 19741
- 1975 to 19791
- 1980 to 19841
- 1985 to 19871
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