Original plumbing trade vintage catalog for COMPOUND INJECTOR & SPECIALTY COMPANY. Main office and factory was located at 419-421 North Laramie Avenue, Chicago, IL. (George J. Dehn, S. E., President.) Manufacturers of Dehn's Sanitary Safeguards, PeerlesS, Re-Tar-DO and FlocontroL. Products shown include floor, grease traps, cleanout plug and hub outlet. Unbound from a large 1938 architectural catalog, this unique old six page technical specifications brochure would display beautifully matted and framed. Nice graphics. A fantastic addition to your retro plumbing collection.