Vintage 20TH CENTURY models 100X, 101 and 104 6 tube, 2 band Superheterodyne AM SW radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. 4 pages. Dated 1947. Electronic Devices Co., of New York, NY. This manual would make a sensational accompaniment to your classic radio equipment.