Library of Congress
Sized, cropped, and adjusted by John Osborne, Dickinson College, June 4, 2010.
Library of Congress Prints and Photographs Division
Morgan Collection of Civil War Drawings, Prints and Photograph Division, Library of Congress
Artist: William Waud.
Sketch for Harper's Weekly where finished engraving was published October 22, 1864, page 677. Also available, here.