WILLIAM EMERY MERRILL - (1837-1891) - Army Enginer, born Ft. Howard, Wisconsin. Graduated at West Point (1859), and tought engineering there until outbreak of Civil War. Became assistant engineer in Army of the Potomac, and later chief engineer of armies of Kentucky and the Cumberland; served at Chickamauga, Lookout Mountain, and Resoca. Chief Engineer under General Sherman in military Division of the Missouri (1867-70); subsequently was engaged on improvement of Ohio, Allegheny, Monongahela, and Muskisgum Rivers. Writings included Iron Truss Bridges for Railroads (1870) and Improvements of Non-Tidal Rivers (1881).