Cite

Topographical map, Gettysburg--Antietam.

MLA

Topographical Map, Gettysburg--Antietam. 1913. https://collections.library.yale.edu/catalog/15827480.

APA, 6th edition

Topographical map, Gettysburg--Antietam. (1913). [Maps]. https://collections.library.yale.edu/catalog/15827480.