Vintage Radio Service Manual - EMERSON Model 528 (Chassis 120038) 8-tube Superheterdyne AM-FM radio receiver. Manufactured by Emerson Radio and Phono Corp., of New York, NY. Dated 1947. 8 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.