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Superman #4
CGC Census
351
Total Graded
0
9.8 NM/MT
5
8.0 VF
When Clark Kent begins to investigate a new weapon being tested by the Army that artifically causes earthquakes, little does he know that Lex Luthor is hot on the trail of securing the plans for that invention, one way or the other.
Cover Date
April 1, 1940
On Sale Date
February 15, 1940
Pages
68
Cover Price
$0.10
Editor
Whitney Ellsworth
Credits
Penciller
Inker
Letterer
Characters
Professor Martinson; phony Professor Martinson (villain, death)
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