Artifact Details

Title

Early Calculating Devices - E.D. Barbour

Catalog Number

102704303

Type

Still Image

Dimensions

overall: 5 in x 4 in

Description

B&W image of Sheet 2 of a Patent application for "Improvement in Calculating-Machines" No. 130,404 Patented Aug 13, 1872.

Category

Identification photograph

Lot Number

X7413.2015