A lot of the World War Two-era comics didn't survive the paper recycling drives that the government encouraged during the war years. That's one of the reasons that pre-1945 comics are worth so much. That Batman I was telling you about earlier is one of only one hundred fifteen known copies of that particular issue that is known to exist.
Dad had kept all his from the 30's and 40's, but he let us play with them in the 60's, and they didn't survive. Those Mickey Mice, Supermen and Batmen would have put all four of us through college.