Vintage Radio Service Manual - MAGNAVOX model 151B (Chassis No. CR-197C) 10-tube Superheterodyne 2-band AM SW radio receiver combination phonograph record changer. Manufactured by Magnavox Company, of Fort Wayne, IN. Dated 1948. 8 pages. Original old Sams Photofact manual includes schematic, layout, alignment instructions, dial cord drive, voltage & resistance test chart, repair parts list and description.  This manual would make a sensational accompaniment to your retro phono equipment.