The topographic maps of the United States [standard symbols].

Chicago citation style
Geological Survey (U.S.). The topographic maps of the United States [standard symbols].. 1882. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/9fa1a600-994e-0134-2096-0050569601ca-7. (Accessed March 8, 2021.)
APA citation style
Geological Survey (U.S.), (1882) The topographic maps of the United States [standard symbols].. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/9fa1a600-994e-0134-2096-0050569601ca-7
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <https://digital.library.illinois.edu/items/9fa1a600-994e-0134-2096-0050569601ca-7>.
Note: These citations are programmatically generated and may be incomplete.