Compare this cover with the cover on All-Star Comics (1940 series) # 8.
Story continues in next issue. Story across 24 pages in three chapters of 6.67 pages, 11.67 pages, and 4.67 pages.
Brief history of Earth-3 also given in this issue, where history ran a reverse course (e.g.- Columbus, an American discovers England and Europe; The English win their war of independence from America; John Wilkes Booth is U.S. President and assassinated by actor Abraham Lincoln), hence why super-powered persons are evil on this earth. Earth-3 also named this issue and introduction of the Crime Syndicate.
On the page between page 14 and page 15 of the main story sequence.
On the page immediately following the previous sequence. Letters from Paul Feola, Patricia Husick, Connie Beane.