Vintage EMERSON model 573B  (Chassis 120039B) Superheterodyne AM radio receiver with phonograph player..  Original old Sams Photofact manual includes schematics, layouts, alignment adjustments, parts list. 4 pages.  Dated 1948.  Emerson Radio and Phono Corp., of New York, NY.  This manual would make a sensational accompaniment to your vintage audio equipment.