- 1970 to 19712
- 1972 to 19732
- 1974 to 19752
- 1976 to 19772
- 1978 to 19792
- 1980 to 19810
- 1982 to 19838
- 1984 to 198511
- 1986 to 19874
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