Key to 72
Chap book and pictures courtesy of Dick Blacher. Comments by Paul Jackson.
Key to 72
Travel Tour of the World Through the Stereoscope
by Elbert Hubbard, 1914
This booklet contains 35 numbered pages. This booklet is listed in McKenna but it is listed as Key to No. 72 vice Key to 72
Keystone View Company
The Keystone View Company was the largest manufacturer of stereoscopic views in the United States, and formerly located in Meadville, Pennsylvania. Keystone View Company originated in 1892, founded by Mr. B. L. Singley, and continued in the vast and diversified business of the stereoscopic industry until the operation closed in 1976. Keystone's business as well as that of several other companies acquired by Keystone, was at first dedicated to the in-home use of stereoscopes and stereoscopic views, so popular in many country parlors. A common family pastime, and one to be shared with guests, was the viewing of stereoscopic 3-D photography long before the advent of moving pictures and other forms of entertainment. Eventually the industry expanded into the realms of institutional education, military training as a means to recognize enemy and friendly aircraft, and optometry. When Keystone View Company entered the optical field, it sold equipment to State Police Agencies in many states for driver's license vision testing. After Keystone was acquired by Mast Development Company it closed its Meadville doors and relocated to Davenport, Iowa. The company possessed by that time the largest collection of stereographic negatives and negative contact prints in the world. This extensive collection was donated to the University of California, Riverside. The negatives and prints remain there today in the University's Museum of Photography.
Information above on the Keystone Co. courtesy of:
423 Chestnut Street
Meadville, Pennsylvania 16335
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