This story was also published in Argosy, with a fantastic cover by P. J. Monahan
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Introducing Captain Future: One Strong Man Battling The Galaxies Of Evil
I actually prefer this to the first edition cover, which is unusual for me.
The first edition cover by John Coleman Burroughs is here.
Not related to Cutcliffe Hyne’s Lost Continent
From Beyond The Fifth Dimension, A Master Fiend Threatens To Destroy The Universe
Current high bid for this artwork: $13,145.00
Pellucidar’s prehistoric beasts offer the Ape Man his greatest challenge