Vintage Phono Service Manual - UTAH RADIO PRODUCTS model 650 automatic phonograph phono record changer.  Manufactured by International Detrola Corp., of Detroit, MI. Dated 1947. 8 pages. Original old Sams Photofact manual includes General Description, Change Cycle, Adjustments, 2 page Exploded Parts View, Service, repair parts list and description.  This manual would make a sensational accompaniment to your retro audio equipment.