Cite

Map of Boston proper.

MLA

Lith., Walker, and Pub. Co. Map of Boston Proper. Walker Lith. & Pub. Co., 1909. https://collections.library.yale.edu/catalog/15827588.

APA, 6th edition

Lith., W., & Co, P. (1909). Map of Boston proper. [Maps]. Walker Lith. & Pub. Co., https://collections.library.yale.edu/catalog/15827588.