- 1890 to 18912,982
- 1892 to 18942,586
- 1895 to 18962,579
- 1897 to 18993,107
- 1900 to 19012,935
- 1902 to 19042,667
- 1905 to 19062,535
- 1907 to 19092,815
- 1910 to 19112,833
- 1912 to 19143,314
- 1915 to 19162,949
- 19173,820
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