MLA

Taylor, George Rogers, 1895-1983. United States and Canadian railways, April 1, 1861 / compiled by George Rogers Taylor ; Robert L. Williams, map maker.. BRBL_00415. c1956.. https://collections.library.yale.edu/catalog/15603793.

APA, 6th edition

Taylor, George Rogers, 1895-1983. (["BRBL_00415"])(c1956.)[United States and Canadian railways, April 1, 1861 / compiled by George Rogers Taylor ; Robert L. Williams, map maker.]. https://collections.library.yale.edu/catalog/15603793.