- 1877 to 18791,337
- 1880 to 18811,295
- 1882 to 18841,424
- 1885 to 18861,265
- 1887 to 18892,240
- 1890 to 18912,974
- 1892 to 18942,576
- 1895 to 18962,572
- 1897 to 18993,060
- 19002,772
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