Hi my name is Dan, I'm not to sure if this is worth anything, but my grandmother's brother was in the navy and picked up a shell of what I believe is a 40mm MK1 from WWII, he was stationed at Guantanamo Bay. I also have a Newspaper from August 15th 1945, when Japan Accepts Full Defeat. And I also have Pictures of Apollo 11 on the moon from the U.S. Government Printing Office, in Washington D.C.
I have attached pictures. If anyone is interested or anyone who may know how much some of these objects may costs, please let me know! :)