Relief shown by hachures.
Shows Washington D.C. region, including western part of Maryland and northeastern Virginia. Does not show Pennsylvania with the exception of Gettysburg.
Pen-and-ink on tracing cloth, mounted on paper.
Holograph beneath title: "A.L. Rives., Col. & asst. to Chf. Eng."
Electronic reproduction. [Washington, D.C.] : Library of Congress, [2005?] Mode of access: World Wide Web.