His granddaughter Sara has a YouTube channel called Frazetta Girls talking about various periods in his life. Not sure if she's done anything about his work on New Heroic Comics, though.
Cited for Heroism – Nice art by the mysterious “JAB”.
Jack Berrill https://www.comics.org/creator/5748
https://www.lambiek.net/artists/b/berrill_jack.htm
He also created the Gil Thorp newspaper strip https://en.wikipedia.org/wiki/Gil_Thorp
Ed Moore https://www.comics.org/creator/3810
https://www.lambiek.net/artists/m/moore_ed.htm
Cheers for the information on Jack 'JAB' Berrill. It's good to know the guy behind the cryptic signature!
And I absolutely need to search for and read more Ed Moore comics, he's become one of my favorite Golden Age artists.
Haha, I'm actually subscribed to Sara's channel, she has some quality content there. I remember watching a video on Frank Frazetta's favorite movies a few weeks ago!

I've been a huge fan of his work since I can remember (started with the covers, obviously). I'm forever grateful to the good folks who scanned and uploaded (and host!) all these comics - first time I ever read a Frazetta drawn comic story, it was here on CB+ !
@crashryan
Frazetta and his friends shot lots of photos to use as panel reference. Many of them are floating around the internet: "Fritz," Al Williamson, Angelo Torres, etc., posing as barbarians, spacemen, manly heroes, and such.
Thanks for the links and photos, first time I'm seeing them, these are awesome! I knew he was in good shape back then, I saw one or two of his 50s photos but it was just a regular, casual one, not a dynamic, proper reference photo like these! I'm going to send links to a friend who's a Frazetta fan as well (who told me about the Frazetta Girls channel in the first place), I'm sure he will appreciate them too.
These days we just tend to google for reference photos and can browse through thousands of them, get inspired, "borrow" this or that pose or gesture, change it up and there are lots of photo reference books on the market, too - not to mention the generative AI which is still a fresh thing. Back then (and since the birth of photography, really) artists had to pose themselves or their models, set the light, not to mention the costs of paying for the film and its development etc.
I vaguely remember still shooting reference photos in the 90s with a friend and posing with some stick instead of a sword - having none of Frazetta's physique nor skills, of course;) Unbelievable, how so much have changed in just a couple of decades.
Thanks for the pics, Crashryan. I knew that comic book artists used reference photos, of course, but I didn't realise they had to stay in shape themselves so they could be panel models 
Apparently Frazetta is an example to follow not only when it comes to art

He wouldn't be out of place in one of those Charles Atlas ads!