Cite

The Union News Company's indexed map of the Worlds Columbian exposition at Chicago, 1893 [cartographic material].

MLA

Union News Company (Boston, Mass.). The Union News Company's indexed map of the Worlds Columbian exposition at Chicago, 1893 [cartographic material].. BRBL_00548. 1893]. https://collections.library.yale.edu/catalog/15814424.

APA, 6th edition

Union News Company (Boston, Mass.). (["BRBL_00548"])(1893])[The Union News Company's indexed map of the Worlds Columbian exposition at Chicago, 1893 [cartographic material].]. https://collections.library.yale.edu/catalog/15814424.