Vintage MOTOROLA models 5J1,  5J1U,  5L1 and 5L1U (Ch. HS-224, HS-250) 4 tube Superheterodyne AM radio receiver.  Original old Sams Photofact manual includes schematic, layouts, alignment info, repair parts list.  4 pages. Dated 1950. Motorola Inc. of Chicago, IL.  This manual would make a sensational accompaniment to your vintage audio equipment.