nearly five hundred all original and rare late 19th and early 20th century factory machine shop catalogs, brochures, blueprints, specs, and product silver gelatin prints salvaged from a chicago factory undergoing demolition. the softbound catalogs are profusely illustrated with numerous machines and parts that were used in factories between the late 1890's through the 1940's. the collection of catalogs belonged to a chicago machine repair shop in business since the late 19th century. the silver gelatin prints show factory interiors, machines, and operators. piles of pamphlets and blueprints are also included. looking to sell as a complete collection only. please call or email for additional images.