Army extension courses. Special text : Field wire systems / prep. under the dir. of the Chief Signal Officer for use with the Extension Course … Army extension courses. Special text : Training management / prep. under the dir. of the Chief of Infantry for use with the Extension Course of … Army extension courses. Special text : Theory of flight, lighter-than-air / prep. under the dir. of the Chief of the Air Corps for use with … Army extension courses. Special text : Supply / prep. under the dir. of the Quartermaster General for use with the Army Extension Courses Army extension courses. Special text : Industrial mobilization : (procurement planning office of The Assistant Secretary of War) / prep. by the Planning Branch, Office … Army extension courses. Special text : Machine guns / prep. under the dir. of the Chief of Cavalry for use with the Extension Course of … army regulations. military education Army extension courses / War Department Army extension courses. Special text : Administration / prep. under the dir. of the Adjutant General Signal : Commercial telephone, telegraph and electric time service, general - USA Voorschrift, Army Regulations, No. 105-30 US Army Register, Volume III, Retired Lists - USA Register Calibration Procedure for Lance Forward Mirror Bracket Assembly 10246197 - USA Voorschrift Technical Bulletin 9-1425-485-50-1 Operator's Manual Multimeters AN/PSM-6, AN/PSM-6A, AND AN/PSM-6B - USA Voorschrift Technical Manual 11-6625-475-10