Hugh Lincoln Cooper (April 28, 1865 — June 24, 1937) was an American Colonel and renowned civil engineer, known for construction supervision of a number of hydroelectric power plants.
Author: Photo by Dniprogess/Dniprostroy. NB! An artificial person (a corporation or some such) held the copyright. Source: Projector (Spotlight) issue 17 (311) dated 15 Sep 1932 License: PD-Ukraine