Action Comics 1938 #328 - 1.5 - $5.00

Mr. Gimmick arranges to have Superman's hands coated with two chemicals that will create a terrible explosion when they come together as he applauds the Superman Day parade in Metropolis.

Two boys who are polluting a stream are given an anti-pollution lesson by a fisherman. Includes an excerpt from an 1869 Massachusetts Board of Health document.

When Supergirl is taken to Dimension Z, she learns that her arrest was a ploy to get her to compete in the interdimensional Contest of Peril.

On-sale date from ad in World's Finest Comics #152 and copyright registration.

• - Inside front cover.
• Nature's Bill of Rights - On the page immediately following page 7 of the previous story sequence. Credits from a list by Lionel English.
• - On the page immediately preceding page 8 of the previous story sequence.
• The Ordeals of Dimension Z - Story continued from the previous issue.
• See Lois Lane Challenge Her Rivals for Superman - house ad for 80 Page Giant (DC, 1964 series) #14, on sale July 15; on the page immediately following page 8 of the previous story sequence
• - on the page immediately following page 8 of the previous story sequence
• The Kat Gets Cooled! - on the page immediately preceding page 9 of the previous story sequence
• Readers -- Why Do You Force Enemy Ace to Kill Again... - house ad for Showcase (DC, 1956 series) #58, on sale July 29; on the page immediately preceding page 9 of the previous story sequence
• - Membership application form for the Supermen of America; also includes message in secret code (Code Pluto No. 8). Decoded message reads: "The Superman TV shows will be broadcast in color next year."
• - letters submitted by Arnold Schmidt; Ray Hyatt; Jill Hodges; Mike Pavlik; Frank Oberc; Bob Allen; David Van De Voort
• - Inside back cover.
• Go Full-Throttle with Wen-Mac - Back cover.