State Highway Department's map of the state of Oregon : showing main traveled automobile roads / compiled and published by the Oregon State Highway Commission.
MLA
Commission, Oregon State Highway. State Highway Department's Map of the State of Oregon : Showing Main Traveled Automobile Roads / Compiled and Published by the Oregon State Highway Commission. Oregon State Highway Commission, 1926. https://collections.library.yale.edu/catalog/15821615.
APA, 6th edition
Commission, O. S. H. (1926). State Highway Department's map of the state of Oregon : showing main traveled automobile roads / compiled and published by the Oregon State Highway Commission. [Road maps]. Oregon State Highway Commission, https://collections.library.yale.edu/catalog/15821615.
