Vintage DUMONT models Cambridge, Colefax, Trainor and Travis (chassis RA-356 and RA-357) TV television receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. 16 pages. Dated 1956. Allen B. Dumont Laboratories, Inc., Of Passiac, NJ. This manual would make a sensational accompaniment to your classic video TV equipment.