Map of the Port of Seattle / by the Port of Seattle Commission.
MLA
Commission, Seattle Port. Map of the Port of Seattle / by the Port of Seattle Commission. Port of Seattle Commission, 1918. https://collections.library.yale.edu/catalog/15821665.
APA, 6th edition
Commission, S. P. (1918). Map of the Port of Seattle / by the Port of Seattle Commission. [Maps]. Port of Seattle Commission, https://collections.library.yale.edu/catalog/15821665.