Citations are generated automatically from bibliographic data as
a convenience, and may not be complete or accurate.
Chicago citation style:
Geological Survey, U.S. Washington and vicinity, Maryland, Virginia, District of Columbia. [Washington, D.C.: U.S., Dept. of the Interior, Geological Survey, 1951] Map. https://www.loc.gov/item/87693097/.
APA citation style:
Geological Survey, U. S. (1951) Washington and vicinity, Maryland, Virginia, District of Columbia. [Washington, D.C.: U.S., Dept. of the Interior, Geological Survey] [Map] Retrieved from the Library of Congress, https://www.loc.gov/item/87693097/.
MLA citation style:
Geological Survey, U.S. Washington and vicinity, Maryland, Virginia, District of Columbia. [Washington, D.C.: U.S., Dept. of the Interior, Geological Survey, 1951] Map. Retrieved from the Library of Congress, <www.loc.gov/item/87693097/>.