Vintage CRESTWOOD models 401 and 402 magnetic tape recorder. Original old Sams Photofact manual. Includes schematic, layout, adjustment instructions, voltage & resistance test chart, repair parts list and description. 15 pages. Dated 1954.  Crestwood Recorder Corp., Div of Daystrom Electric Corp., of Chicago, IL. This manual would make a sensational accompaniment to your classic audio recording equipment.