I don't have all the issues of SPACEMEN, but I know a few articles from it ended up in FM like the one on 20 MILLION MILES TO EARTH in FM #37. The Captain Marvel article in FM #101 was probably originally from SCREEN THRILLS. I think a Tarzan article from SCREEN THRILLS made it into FM too. Actually, I wish more of the SPACEMEN articles had been reprinted later in FM. There are some great pieces that I never saw until recent years.