Wars; World; # 2; Detroit; Air Raid; Equipment Misc. . World War, 1939-1945 World War, 1939-1945--Michigan--Detroit Air raid warning systems Air raid warning systems--Michigan--Detroit--1940-1950 Walter P. Reuther Library, Archives of Labor and Urban Affairs, Wayne State University Detroit News (Firm) 1942-03-12 Image photographs tiff wayne:vmc79442_2 vmc79442_2 http://digital.library.wayne.edu/item/wayne:vmc79442_2 http://digital.library.wayne.edu/item/wayne:vmc79442_2/thumbnail Detroit News Photograph Collection (UAV002691) Virtual Motor City Michigan Detroit 1940-1950 Copyright Walter P. Reuther Library, Archives of Labor and Urban Affairs, Wayne State University