I think.

There's a lot of beautuful work there, Frank. The last image, the sci-fi one with the dinosaur, is particularly striking. Where was that piece published?

It was the cover for a fanzine but I can't remember the name of it.
I'm getting to old to remember all this stuff!
I'll try to find out for you.

Thanks! It really is an incredible piece. The obvious danger of the dinosaur is so "in your face" that you don't immediately notice the more subtle, yet equally dangerous threat behind our heroes. Beautiful!

Kevin,
That was a cover for an old fanzine called All Stars it also appeared as a back cover to a book that came out a few years ago called Comic Fandom Reader which collected a bunch of stuff from 1960's fanzines.