Vintage ESPEY model 581 8 tube Superheterodyne AM SW multi-band radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. 6 pages. Dated 1947. Espey Manufacturing Company, Inc. of New York City, NY. This manual would make a sensational accompaniment to your classic retro radio equipment.