Original elevator trade vintage catalog for DOOR-MOTIVE CORPORATION, subsidiary of Riley Stoker Corporation. Offices were located at 9 Nesponset Street in Worcester, MA and 270 St. Aubin Street, Detroit, MI. Manufacturers of power operators for elevator doors. Used in counterbalanced, center-parting and pass type elevator doors where more than three or four floors are to be equipped. Used by Chrysler Motor Car Company, Atwater Kent, Cadillac Motor Car Company, Hupp Motors and Norton Company. Disbound from a large 1931 elevator construction materials book, this unique old two page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro elevator equipment library.