- 1890 to 18913,138
- 1892 to 18942,741
- 1895 to 18962,736
- 1897 to 18993,264
- 1900 to 19013,094
- 1902 to 19042,823
- 1905 to 19062,695
- 1907 to 19092,976
- 1910 to 19112,995
- 1912 to 19143,475
- 1915 to 19163,111
- 19173,980
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