Copyright 1943 by Comic Magazines. The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1943, New Series, Vol. 38, No. 4.
Plastic Man [Patrick "Eel" O'Brian]; Woozy Winks; Lester G. Simpkins (introduction, death); Sykes Mob [Joe Sykes (villain, introduction); Mike (villain, introduction); Sam (villain, introduction); Louie (villain, introduction)]; Number Seven (villain, introduction)
Synopsis
Plastic Man must figure out why people are killing to obtain an old book and must find a way to defeat Number Seven, a disfigured WW1 vet who wielded a gun that shot liquid fire.
This is Leav. He draws large hands, many lively faces, some panels without backgrounds, and a special way of running with high lifted legs. Compare with his signed story in Wanted Comics #52.