Operating practices for army administrative telephone switchboards - USA Voorschrift, Technical Manual, 24-210 Telephone central office set TC-10 - USA Voorschrift, Technical Manual, 11-338 Local-battery telephone equipment - USA Voorschrift, Technical Manual, 11-457 Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 technical manual Telephone repeater TP-14 - USA voorschrift Technical Manual 11-2007 Telephone Terminal Set TC-21 (N) (Carrier) - USA Voorschrift, Technical Manual, 11-341 Telephone central office set TC-12 - USA Voorschrift, Technical Manual, 11-336 Telephone central office set TC-2 - USA Voorschrift, Technical Manual, 11-340 Common-battery telephone equipment - USA Voorschrift, Technical Manual, 11-458 Principles of long distance telephone and telegraph transmission - USA Voorschrift, Technical Manual, 11-475 Telephone repeater EE-89-A - USA Voorschrift, Technical Manual, 11-2006 Radar / American Telephone and Telegraph Co.
