Comments from 1975 seem to indicate that California Supermen was a combination of Loadstar and Manpower edited together or at least sold by Wakefield Poole. There is not enough information on those two to know how or if they were pieced together.
Ken Sprague
The Lead
Rick Cassidy
The Warm-Up Assistant
Bruce Morgan
The Priest
Stacey
The Winner
Bob Birdsong
Acting
Chuck Zephyr
Jean-Claude
The Fall of Communism as Seen in Gay Pornography
Without a Mom
The Fluffer
Beautiful Beings
Only Andy
Piss Off X
Knife+Heart
Body Without Soul
Damon and Hunter: Doing It Together
Mondo Homo: Inquiry Into 70's Gay French Porn