MLA

Association, American Automobile. Vermont and New Hampshire / Prepared by Touring Information Board American Automobile Association. The Association, 1920. https://collections.library.yale.edu/catalog/15827732.

APA, 6th edition

Association, A. A. (1920). Vermont and New Hampshire / prepared by Touring Information Board American Automobile Association. [Tourist maps]. The Association, https://collections.library.yale.edu/catalog/15827732.