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[The Australian Panther]

Frabig's 'PD Justice League inspired this.
Being Timely/Atlas these books are not PD, but they are Golden Age.

the first volume of All Winners Comics ran 20 issues, numbered #1-19 and #21 (Summer 1941 - Winter 1946/47)

The book featured stories of individual heroes till #19 when there was the first team-up and All-Winners Squad, came into being.
(Fall 1946),]
Question #!
Who were the 6 heroes featured in Issue #1?
Question #2
Who were the #7 heroes who teamed up in issue #19?
USA Comics - Atlas/Timely ran from
August 1941 to Fall 1945,
Featured various second-tier heroes
Question #3
Who were the featured heroes in Issue #1?
Question #4
Who were the featured heroes in Issue # 17[? [last issue]
There were at least 8 heroes that were never revised in the 70's, including a version of Marvel Boy that predates the later 50's  version.
Some of the OK characters were later revived in the mini-series,The Twelve No attempt was made to include them in Marvel continuity.
Enjoy!

[gregjh]

Sorry if I'm being daft: is there anywhere we can legally read them for free? Surely the copyright has expired?

[The Australian Panther]

Nowhere we can legally read them for free. But the web being the web there may be places where you can find them.

cheers!

[The Australian Panther]

Sorry if I'm being daft: is there anywhere we can legally read them for free? Surely the copyright has expired?

You can get the information by searching the titles, there are plenty of sites out there that will give you the information, including GCD.
https://www.comics.org/
The information is not really that hard to find.

Cheers!