Science Fiction Theater (50s TV)

I recently got the DVD set of Science Fiction Theater, a show I used to watch in the late 50s. At the end of each show, the host, Truman Bradley, opens an issue of Scientific American and reads it. This is for the closing credits, and I believe it is the same piece of film each time. The question is has anyone ever figured out which issue of SA, he’s reading? This has bugged me since the 50s.