Vintage Radio Service Manual - OLYMPIC model 7-622 & 7-638 6-tube Superheterodyne AM radio receiver with combination phonograph record changer. Manufactured by Olympic Radio and Television, Inc., of Long Island City, NY. Dated 1948 4 pages. Original old Sams Photofact manual, schematic, layout, voltage/resistance charts, alignment info and repair parts list. This manual would make a sensational accompaniment to your retro phono equipment.