- 1916 to 19191
- 1920 to 19242
- 1925 to 19291
- 1930 to 19343
- 1935 to 19391
- 1940 to 19440
- 1945 to 19490
- 1950 to 19540
- 1955 to 19591
- 1960 to 19641
- 1965 to 19691
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