Aluminum collection. A store window display in New York, New York, promoting the National Defense Aluminum Collection (July 21-29, 1941). This collection was conducted by the Office of Civilian Defense and some of the aluminum obtained will be for use in industries producing for national defense. Much of the lower grade aluminum collected which cannot be used directly for this purpose will be used to replace new aluminum in the manufacture of consumer goods, and hence release this new aluminum for use in defense production