Vintage AVIOLA model 509 combination Superheterodyne 5 tube AM radio receiver with phonograph record player. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. Dated 1946.  4 pages. Aviola Radio Corp., of Phoenix, AZ. This manual would make a sensational accompaniment to your classic retro radio / phono equipment.