Vintage DETROLA model 558-1-49A Superheterodyne 5 tube AM radio receiver with automatic phonograph record changer player. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. Dated 1946. 4 pages. International Detrola Corp., of Detroit, MI. This manual would make a sensational accompaniment to your classic retro radio / phono equipment.