Vintage AERMOTIVE model 181-AD 8 tube Superheterodyne AM 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. Aermotive Equipment Corp., of Kansas City, MO. (Formally Air Communications Inc.). This manual would make a sensational accompaniment to your classic radio equipment.