Introduction
Some more sinister mad science pulp recreated by José Augusto Cano.
Image

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Source
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The cover of a rare pulp magazine called Gangland Detective (November 1939). According to this rare book site, the issue contains a story called “Mistress of the White-Slave King.” Some additional provenance can be found in the post “Oh, great. Now Satan has a death ray…” at Hedonix.
The Artist
José Augusto Cano has a DeviantArt site here and a professional site here.