Vintage Radio Service Manual - EMERSON model 548 (Chassis No. 120051) 3-tube record player  phonograph. Manufactured by Emerson Radio and Phonograph Corp., of New York, NY. Dated 1947. 2 pages. Original old Sams Photofact manual includes schematic, layout, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro phono equipment.