answer:That’s a toughie. I think I would start by writing to the people behind MagazineArt.org, simply because they seem to have a familiarity with Collier’s issues from that era. This is their covers page, and this is their Collier’s profile. The cover pages give artists names, which is a place to begin – though your exact cover is not on the site. At the very least, they might be able to tell you where to look for the model’s name (or are you certain that it’s an actor?). Edit: It looks like the artist’s name was Charles A. MacLellan, according to this.