The Earth's Core

From Author Wars - https://authorwars.com/books/the-earths-core-837461.html

Overview:

Title: The Earth's Core
Author: H. R. Hammond
Year: 1940
Type: Interior Art

Editions/Publications:

Unknown. Amazing Stories, March 1940 (Unknown, H. R. Hammond, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)