00903cam a22002651 4500 war11000034 DLC 20260227112809.0 750109s1911 xx 000 0 eng war11000034 (OCoLC)1135328 DLC NhD OCoLC DLC premarc UG590 .U63 1910 United States. Army. Signal Corps. Electrical instruments and telephones of the U.S. Signal corps. Revised 1910. Washington, Govt. print. off., 1911. 332p. illus., diagrs. 24cm. Its Manual no. 3 "War department. Document no. 378. Office of the Chief signal officer of the army." Military telegraph United States. Military telephone United States. United States. Army. Signal Corps. Manual no. 3. 92171 92171