- 1894 to 18952,490
- 1896 to 18972,874
- 1898 to 18992,598
- 1900 to 19012,929
- 1902 to 19032,364
- 1904 to 19052,456
- 1906 to 19072,492
- 1908 to 19092,643
- 1910 to 19112,824
- 19122,666
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