- 1928 to 192958
- 1930 to 193486
- 1935 to 1939109
- 1940 to 194448
- 1945 to 194934
- 1950 to 195426
- 1955 to 195933
- 1960 to 1964123
- 1965 to 1969141
- 1970 to 1974102
- 1975 to 1979143
- 1980 to 1983173
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