A couple of months ago, I did an installment about Superman being declared 4-F. In it, I mentioned how, although the scene was referenced in the comic books, it never actually appeared IN the comics, only in the comic strips. Sadly, I did not have a copy of the comic strips. Luckily, though, the nifty website Barnacle Press recently posted the comic strips in question!
Here, courtesy of scans by Thrillmer, are the three strips from February 16-18, 1942, showing how Clark Kent was declared 4-F!
Here's a close-up look at the x-ray vision problem...