Vintage AVIOLA models 608 and 618 combination 6 tube Superheterodyne. 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. 4 pages. Dated 1947. Aviola Radio Corp., of Phoenix, AZ. This manual would make a sensational accompaniment to your classic retro radio / phono equipment.