POLAND DEATH CAMPS
June 1, 1942 - Poland
A Warsaw underground newspaper, the Liberty Brigade, is the first public newspaper to tell the world about the death camps in Poland where tens of thousands of Jews are gassed to death at Chelmno, a death camp in Poland.
SUPERMAN APPEARS FOR THE FIRST TIME
June 1, 1938 - USA
Superman created by American writer Jerry Siegel and Canadian artist Joe Shuster made his first appearance in D.C. Comics’ Action Comics Series issue #1 which sold for 10 cents.