Citations are generated automatically from bibliographic data as
a convenience, and may not be complete or accurate.
Chicago citation style:
Geological Survey, U.S, Henry Gannett, G Thompson, J. D Hoffman, D. J Howell, and U.S. Coast And Geodetic Survey. Maryland--District of Columbia--Virginia, Washington sheet. [Washington?: U.S. Geological Survey, ?, 1885] Map. https://www.loc.gov/item/94684037/.
APA citation style:
Geological Survey, U. S., Gannett, H., Thompson, G., Hoffman, J. D., Howell, D. J. & U.S. Coast And Geodetic Survey. (1885) Maryland--District of Columbia--Virginia, Washington sheet. [Washington?: U.S. Geological Survey, ?] [Map] Retrieved from the Library of Congress, https://www.loc.gov/item/94684037/.
MLA citation style:
Geological Survey, U.S, et al. Maryland--District of Columbia--Virginia, Washington sheet. [Washington?: U.S. Geological Survey, ?, 1885] Map. Retrieved from the Library of Congress, <www.loc.gov/item/94684037/>.