- 1890 to 18913,135
- 1892 to 18942,739
- 1895 to 18962,733
- 1897 to 18993,261
- 1900 to 19013,092
- 1902 to 19042,821
- 1905 to 19062,690
- 1907 to 19092,970
- 1910 to 19112,988
- 1912 to 19143,469
- 1915 to 19163,105
- 19173,975
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