A historical sketch of the U.S. Army's Signal Corps during the 19th and 20th centuries.

At head of title: The Signal School, United States Army, Camp Alfred Vail, New Jersey. Reproduced from typewritten copy; t.p. printed.

Origin of military signaling in the United States --"Signals" in the Civil War -- Peace time activities (1866-1897) -- The Signal Corps in the Spanish War -- The Signal Corps in the Period (1899-1916) -- "Signals" in the World War -- The period of reorganization (1919- ).