Vintage Service Manual - RAULAND model 2101A (Master Station) & 2100-S (Sub-Station) Amplicall office intercom inter-communications system. Manufactured by Rauland Corp., of Chicago, IL. 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 equipment.