- 1950 to 195124
- 1952 to 195337
- 1954 to 195546
- 1956 to 195744
- 1958 to 195932
- 1960 to 196161
- 1962 to 196381
- 1964 to 196588
- 1966 to 196782
- 196872
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