MOMA archives show that a competition took place in October 1942, the Exhibition opened on Nov 25th 1942

List of winners attached

1942 War poster winners

Interestingly some great names entered but did not win : Ben Nason, Joseph Binder and Weimer Pursell were singled out for honourable mentions

 

 

 

See attached for more information

 

via National War Poster Competition | MoMA