Classification Class U: Military science (U.S. Govt. print. off., 1928)
At head of title: Library of Congress. - Prefatory note signed: Clarence W. Perley, chief of Classificatiion division. - The schedules first prepared in 1903 under the direction of Mr. Charles Martel, then chief classifier, were based upon the classification pubished by the Military information division of the Adjutant general's office, U. S. War department, 1903. First edition printed 1910