Iowa-Illinois, Fort Madison quadrangle

Chicago citation style
Geological Survey (U.S.). Iowa-Illinois, Fort Madison quadrangle. 1936. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/903cc4d0-82d4-0134-1f08-0050569601ca-d. (Accessed March 28, 2024.)
APA citation style
Geological Survey (U.S.), (1936) Iowa-Illinois, Fort Madison quadrangle. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/903cc4d0-82d4-0134-1f08-0050569601ca-d
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <https://digital.library.illinois.edu/items/903cc4d0-82d4-0134-1f08-0050569601ca-d>.
Note: These citations are programmatically generated and may be incomplete.