The Driving Clock and the Clamp and Slow-Motion Screw of an Equatorial, 119929. Creighton University Libraries, Archives & Special Collections.

The Driving Clock and the Clamp and Slow-Motion Screw of an Equatorial, 119929. Creighton University Libraries, Archives & Special Collections. https://creighton.as.atlas-sys.com/repositories/2/digital_objects/1312 Accessed May 18, 2024.