Fantastic Four "4″ design intrigue

These sketches of the costume symbol are drawn on the back of the original art for FANTASTIC FOUR #3 page 16, the issue being drawn, of course, by Jack Kirby. Several bloggers have been trying to figure out who did them and what relationship they have to the actual costume symbol that first appears in this issue. You can read about it HERE and HERE, and probably other places as well. Did Stan Lee draw them? He's still around, and might remember, though he's notorious for his bad memory about such things. Sure would be interesting if someone asked him…