Actions for National defense migration. Part 30, Problems of evacuation of enemy aliens and others from prohibited military zones, Portland and Seattle hearings, February 26 and 28, and March 2, 1942 : hearings before the Select Committee Investigating National Defense Migration, House of Representatives, Seventy-seventh Congress, second session pursuant to H. Res. 113, a resolution to inquire further into the interstate migration of citizens, emphasizing the present and potential consequences of the migration caused by the national defense program