Cite

Narraganset Bay : Sheet No. 7.

MLA

Survey, United States Coast. Narraganset Bay : Sheet No. 7. United States Coast Survey, 1872. https://collections.library.yale.edu/catalog/15654616.

APA, 6th edition

Survey, U. S. C. (1872). Narraganset Bay : Sheet No. 7. [Maps]. United States Coast Survey, https://collections.library.yale.edu/catalog/15654616.