Mortimer Dormer Leggett (April 19, 1821 – January 6, 1896) was a lawyer, school administrator, professor, and a general of the Union Army during the American Civil War.
Source: Library of Congress Prints and Photographs Division. Selected Civil War photographs, 1861-1865. http://hdl.loc.gov/loc.pnp/cwpb.06156. CALL NUMBER: LC-B813- 2047 A[P&P] License: CC-PD-Mark