Cite

G. Woolworth Colton's railroad map of Illinois.

MLA

Colton, G. Woolworth (George Woolworth), 1827-1901. G. Woolworth Colton's railroad map of Illinois.. BRBL_00549. 1861. https://collections.library.yale.edu/catalog/15814446.

APA, 6th edition

Colton, G. Woolworth (George Woolworth), 1827-1901. (["BRBL_00549"])(1861)[G. Woolworth Colton's railroad map of Illinois.]. https://collections.library.yale.edu/catalog/15814446.