Credits for the following covers are taken from the Grand Comics Database, which attributes them all to Joe Doolin, except #70, which the folks at GCD think might be by another hand, possible Nick Cardy, while I, on the other hand, think that #69 looks suspiciously unlike Joe Doolin’s work:
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The lesson of Jungle Comics #66: sometimes a rifle is not just a rifle!
Ragged Claws Network 