United States base map / compiled by Henry Gannett ; engraved by U.S.G.S.
MLA
Geological Survey (U.S.). United States base map / compiled by Henry Gannett ; engraved by U.S.G.S.. BRBL_00407A. 1899. https://collections.library.yale.edu/catalog/15603690.
APA, 6th edition
Geological Survey (U.S.). (["BRBL_00407A"])(1899)[United States base map / compiled by Henry Gannett ; engraved by U.S.G.S.]. https://collections.library.yale.edu/catalog/15603690.