Cite

Map of Troy, also West Troy and Green Island.

MLA

Sampson, Murdock, and Co. Map of Troy, Also West Troy and Green Island. Sampson, Murdock, & Co., 1890. https://collections.library.yale.edu/catalog/15762481.

APA, 6th edition

Sampson, M., & C. (1890). Map of Troy, also West Troy and Green Island. [Maps]. Sampson, Murdock, & Co., https://collections.library.yale.edu/catalog/15762481.