The five hand screws on the front page were manufactured by The Cincinnati Tool Company. The two clamps on the page verso were designed by John M. Hargrave who worked for the Company. The screws are available from Chas. Cordts & Co., Inc., 106 East 19th Street, New York City.
Date:
undated
Collection:
Ephemera collection
GUSN:
266569
Ref. Code:
EP001.12.014.003.006