Cite

Washington Sound and approaches, Washington Territory : 1866.

MLA

Coast, U. S., and Geodetic Survey. Washington Sound and Approaches, Washington Territory : 1866. Coast and Geodetic Survey, 1881. https://collections.library.yale.edu/catalog/15821680.

APA, 6th edition

Coast, U. S., & Survey, G. (1881). Washington Sound and approaches, Washington Territory : 1866. [Maps]. Coast and Geodetic Survey, https://collections.library.yale.edu/catalog/15821680.