Vintage DELCO models R-1408 and R1409 6 tube Superheterodyne AM radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. 4 pages. Dated 1947. Delco Radio, Div of G.M. Corp., of Kokomo, IN. This manual would make a sensational accompaniment to your classic retro radio equipment.