- 1902 to 1904496
- 1905 to 1909761
- 1910 to 1914853
- 1915 to 1919696
- 1920 to 1924616
- 1925 to 1929650
- 1930 to 1934557
- 1935 to 1939766
- 1940 to 1944976
- 1945 to 19492,861
- 1950 to 19543,071
- 1955 to 19592,781
- 1960 to 19643,331
- 1965 to 19662,492
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