"A Potent Death Ray Contraption"

Written by S. R. Powell(writer and artist)

Issued 04/1940

Mystery Men Comics #9 - A professor has perfected a death ray using sound waves. He sends a letter to the government offering it for use and D-13 is sent to "see what it's all about". Foreign agents, of course, want it, too.

Here are the pages I have of it.

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