Secret Agent X, February 1938 (cover)

From Author Wars - https://authorwars.com/books/secret-agent-x-february-1938-cover-1547481.html

Overview:

Title: Secret Agent X, February 1938 (cover)
Author: Rafael M. de Soto
Year: 1938
Type: Interior Art

Editions/Publications:

Unknown. Secret Agent-X: A History (Unknown, Rafael M. de Soto, Robert Weinberg, $5.50, 96 pages, Trade Paperback, Non-fiction)
Unknown. Secret Agent-X (Unknown, Rafael M. de Soto, Golden Perils Press & Fading Shadows, $7.95, 92 pages, unknown, Non-fiction)