Vintage Radio Service Manual - TRUETONE model D4620 5-tube pushbutton tuning car Superheterodyne AM radio receiver. Manufactured by Western Auto Supply Company, of Kansas City, MO. Dated 1947. 4 pages.Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro audio equipment.