Original wood trade vintage catalog for AMERICAN LUMBER & TREATING COMPANY. Main office and plant was located at 37 West Van Buren Street, Chicago, IL. Manufacturers of Genuine Wolman Salts Wood Preservative. Wolmanizing, A Process of Impregnation. Protects against decay and termites. A.L.T. CO. Unbound from a large 1938 architectural catalog, this unique old one page technical brochure would display terrific matted and framed. A marvelous addition to your retro wood library.