Vintage DEWALD models A500, A501, A502 and A503 Superheterodyne AM 5 tube radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. Dated 1946. 4 pages. DeWald Radio Manufacturing Corp. Of Long Island City, NY. This manual would make a sensational accompaniment to your classic retro radio equipment.