- 1970 to 19711
- 1972 to 19731
- 1974 to 19751
- 1976 to 19771
- 1978 to 19791
- 1980 to 19811
- 1982 to 19831
- 1984 to 19851
- 1986 to 19871
- 1988 to 19891
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