Vintage Service Manual - RCA VICTOR model MI-13167 3-tube office inter-communications (intercom) system. Manufactured by RCA Victor, div of Radio Corporation of America, of Camden, NJ. Dated 1948. 4 pages. Original old Sams Photofact manual includes schematic, layout, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro office electronics equipment.