Secret Agent X, April 1937 (cover)

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Overview:

Title: Secret Agent X, April 1937 (cover)
Author: Rafael M. de Soto
Year: 1937
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)