A 1942 poster from the Western Defense Command and Fourth Army Wartime Civil Control Administration, Presidio of San Francisco, California, announces the evacuation of Japanese ancestry from the westbound section of San Francisco, bound on the north by California Street, and the eastbound section of San Francisco, bound on the south by Exclusion Order No. 20. The poster instructs all persons of Japanese ancestry to vacate the area by 12 o'clock noon on Friday, April 24, 1942, without obtaining special permission from the representative of the Commanding Gene P. W. Japanese.