I always look for airmail envelopes in stationery stores and flea markets, and found this beat up one a few weeks ago for $1. I knew it had been written by a sailor from the naval censor stamp and postmark, but didn’t see the date or read the letter inside until later. It’s from a radioman third class stationed on the USS Chilton in the Pacific to his brother in the army, written in May of 1945 after learning that Hitler was dead, and Germany had surrendered. “Hello Al, I received a letter from you a few days ago and I’m glad to learn everything is O.K. with you. As…