- 1916 to 19197
- 1920 to 1924108
- 1925 to 192925
- 1930 to 193421
- 1935 to 1939163
- 1940 to 194423
- 1945 to 194941
- 19508
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