Keystone View Company

Major American Photographic image producer and distributor founded in 1892 in Meadville, Pennsylvania by B. L. Singley, an amateur photographer. The company was most prosperous in the 1930's. It was puchased in 1963 by the Mast Development Company, when lantern slides were becoming obsolete as a market. accessed 8/23/2019 SM http://vocab.getty.edu/page/ulan/500450247