- 1950 to 19518
- 1952 to 19538
- 1954 to 19558
- 1956 to 19578
- 1958 to 19598
- 1960 to 196137
- 1962 to 196337
- 1964 to 196537
- 1966 to 196737
- 1968 to 196937
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