- 1950 to 195138
- 1952 to 195338
- 1954 to 195538
- 1956 to 195738
- 1958 to 195938
- 1960 to 19617
- 1962 to 19637
- 1964 to 19657
- 1966 to 19677
- 1968 to 19697
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