Keystone View Co produced stereo views from 1892
until 1964, becoming the largest publishers of stereo views in the USA -
targeting particularly the school and university markets.
Companies Taken Over
Keystone View CO
purchased the negatives stock of many companies including:
- Underwood & Underwood
- H C White
- H C Graves (?)
- Berry
- Kelley & Chadwick
- T W Ingersoll
Stereo Views - An illustrated History
and Price Guide: John Waldsmith - 2nd edition 2002 [ISBN 0 87349 401
1]