- 1940 to 1940 2,660
- 1941 to 1941 2,439
- 1942 to 1942 1,873
- 1943 to 1943 2,023
- 1944 to 1944 2,212
- 1945 to 1945 2,526
- 1946 to 1946 3,007
- 1947 to 1947 3,242
- 1948 to 1948 3,064
- 1949 to 1949 3,532
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