9½x7½ or smaller, on original mounts. Includes: The Boiler Room, Green Mountain. (Mount corners missing). * South Dacota St., Butte City, Montana. * Large factory or mill with train shed in front with engine on which is "P.V.C.R R." * Same building from different angle, engine not visible. * Nearly 20 miners with picks, etc., standing in front of a building. * 8 workers on or in front of a stationary steam engine. * Interior of a factory with a large metal lathe or similar machine. *