Beat me to it...
A friend in Australia sent me the article; I came here to post it and found you already had! Thanks, Phil.
The Saturn paintings were reproduced as full color glossy plates in the encyclopedia my family owned when I was a child, and my dad's penchant for SF 'digests' (Galaxy, F&SF) brought even more Bonestell art to help push my mind spaceward. Don't think I've ever quite come back since...
Fox (also read the Collier's articles)