- 1970 to 197141
- 1972 to 197341
- 1974 to 197541
- 1976 to 197741
- 1978 to 197941
- 1980 to 19813
- 1982 to 19830
- 1984 to 19852
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