Sources

HCW: Lossing, Benson J., A History of the Civil War 1861-65 and the Causes That Led Up to the Great Conflict, New York: The War Memorial Association (1912)
IHW: Hutchinson, Rev. William, ed., An Illustrated History of Washington and his Times, Norwich, Conn.: Henry Bill (1868)
LGP: Weaver, G. S., The Lives and Graves of our Presidents, Chicago: Elder Publishing Company (1884)
LOC: Library of Congress, http://www.loc.gov/pictures
NAR: National Archives and Records Administration, http://www.archives.gov