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, District of Columbia-Maryland-Virginia. [Washington: U.S., Dept. of the Interior, Geological Survey, 1956] Map. https://www.loc.gov/item/87693123/.
APA citation style:
Geological Survey, U. S. (1956) Washington and vicinity, District of Columbia-Maryland-Virginia. [Washington: U.S., Dept. of the Interior, Geological Survey] [Map] Retrieved from the Library of Congress, https://www.loc.gov/item/87693123/.
MLA citation style:
Geological Survey, U.S. Washington and vicinity, District of Columbia-Maryland-Virginia. [Washington: U.S., Dept. of the Interior, Geological Survey, 1956] Map. Retrieved from the Library of Congress, <www.loc.gov/item/87693123/>.