Original elevator trade vintage catalog for CLARK PNEUMATIC SERVICE COMPANY. Main office and factory was located at 534 West 30th Street, New York City, NY. Manufacturers of Dispatch Tube Systems, Transparent Message Carriers, Stainless Steel Cash Carriers, Package and Correspondence Lifts, Conveyors, New Style Metal Document Carriers. Used at R.H. Macy, Lord & Taylor, Bloomingdale Bros., Arnold Constable, Goldsmith Bros, Saks-Fifth Avenue, Coty, Sinclair Valentine, Holland American Line, Waldorf-Astoria Hotel, Hotel New Yorker and more. Disbound from a large 1938 elevator construction materials book, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro elevator equipment library.