Keystone View Company

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The Keystone View Company was a major distributor of stereographic images.

The company was started in Meadville, Pennsylvania in 1892 by B. L. Singley, who previously was a salesman for Underwood & Underwood.

In 1978, the company's records and inventory of negatives, weighing more than 30 tons, were donated to the California Museum of Photography at the University of California Riverside, where they are now known as the Keystone-Mast collection.