MLA

Map of Seattle, 1911-12 / Drawn Originally from Official Records in Office of City Engineer and Revised by L. Missigman. Seattle Pioneer Pocket Guide, 0AD. https://collections.library.yale.edu/catalog/15821664.

APA, 6th edition

Map of Seattle, 1911-12 / drawn originally from official records in Office of City Engineer and revised by L. Missigman. (0 C.E.). [Maps]. Seattle Pioneer Pocket Guide, https://collections.library.yale.edu/catalog/15821664.