- 1890 to 18912,979
- 1892 to 18942,583
- 1895 to 18962,576
- 1897 to 18993,104
- 1900 to 19012,933
- 1902 to 19042,665
- 1905 to 19062,533
- 1907 to 19092,813
- 1910 to 19112,830
- 1912 to 19143,310
- 1915 to 19162,946
- 19173,815
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