Japanese-American Intrernment By fiestabowl23 Period: Sep 1, 1939 to Sep 2, 1945 World War II Feb 14, 1942 Roosevelt Signs Executive Order 9066 It authorizes the imprisonment of all people of Japanese ancestry living in the U.S. Mar 21, 1942 First "Volunteer" Inmates are interned at the Manzanar, California camp This occurs at the Manzanar camp in California. Aug 10, 1942 Inmates arrive at Minidoka, Idaho internment camp Aug 12, 1942 Inmates Arrive at the Heart Mountain, Wyoming Internment Camp Aug 27, 1942 Inmates arrive at the Granada, Colorado camp Sep 11, 1942 Inmates arrive at the Topaz, Utah camp Sep 18, 1942 Inmates arrive at the Rohwer, Arkansas Internment Camp Oct 20, 1942 President Roosevelt calls the Internment camps "Concentration Camps" Jun 21, 1943 Supreme Court Verifies Constitutionality of the Internment May 7, 1945 Germany Surrenders, ending the war in Europe Aug 14, 1945 Japan Surrenders, ending World War II.