United States Military Academy -- Faculty. ; United States Military Academy. Dept. of Mathematics. ; Edgerton, Wright Prescott, 1852-1904, USMA 1874. ; Echols, Charles P. (Charles Patton), 1867-1940, USMA 1891.
Colonel Wright Prescott Edgerton, Professor of Mathematics, 1898-1904,(assistant professor of mathematics 1882-1887, 1889-1898) and Charles Patton Echols, Instructor of Mathematics, 1895-1904, (Professor of Mathematics 1904- 1931) seated at desks.