The Return to Subterrania

From Author Wars - https://authorwars.com/books/the-return-to-subterrania-1124053.html

Overview:

Title: The Return to Subterrania
Author: Frank R. Paul
Year: 1930
Type: Interior Art

Editions/Publications:

Unknown. Science Wonder Stories, April 1930 (Unknown, Frank R. Paul, Stellar Publishing Corporation, $0.25, 96 pages, pulp, MAGAZINE)