- 1950 to 195113
- 1952 to 195313
- 1954 to 195513
- 1956 to 195713
- 1958 to 195913
- 1960 to 19615
- 1962 to 19635
- 1964 to 19655
- 1966 to 19675
- 1968 to 19695
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