Pennsylvania, Gettysburg Battlefield, Trossel's (Trostle's) House.

Chicago citation style
War Department. 1789-9/18/1947. Pennsylvania, Gettysburg Battlefield, Trossel's (Trostle's) House.. 1863-07. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/533316. (Accessed October 16, 2018.)
APA citation style
War Department. 1789-9/18/1947, (1863-07) Pennsylvania, Gettysburg Battlefield, Trossel's (Trostle's) House.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/533316
MLA citation style
War Department. 1789-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/533316>.
Note: These citations are programmatically generated and may be incomplete.