Uncanny X-Men (1963 1st Series) 15
The origin of the Beast. Cover pencils by Jack Kirby, inks by Dick Ayers. Prisoners of the Mysterious Master Mold!, script by Stan Lee, pencils by Jack Kirby (layouts) and Werner Roth [as Jay Gavin] (pencils), inks by Dick Ayers; The X-Men invade the Sentinel's underground complex but are captured; Beast is taken before the Sentinel's leader, Master Mold, and has his mind probed; Master Mold commands Trask to make an army of Sentinels so they can take over the world. 36 pgs. $0.12. Cover price $0.12.