- 1922 to 192494
- 1925 to 19298
- 1930 to 19348
- 1935 to 19398
- 1940 to 19448
- 1945 to 19498
- 1950 to 19548
- 1955 to 19598
- 1960 to 19648
- 1965 to 19698
- 1970 to 19748
- 1975 to 19798
- 1980 to 19848
- 1985 to 19898
- 1990 to 19928
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