Adapted from the Avenger story "The Yellow Hoard" from The Avenger (Street and Smith, 1939 series) #2 (October 1, 1939) pulp magazine written by Paul Ernst [as Kenneth Robeson].
Script credit from Anthony Tollin, who discovered Otto Binder wrote the first two Iron Munro stories and Theodore Sturgeon wrote them the rest thereafter. Originally credited to Theodore Sturgeon by Anthony Tollin.
The Iron Munro comic stories were inspired/based on editor John W. Campbell's Arn Munro short stories in the Astounding Science-Fiction (Street and Smith, 1938 series) pulp.
Continued in next issue.
Adapted from the Doc Savage story "The Crimson Serpent" from Doc Savage (Street and Smith, series) v13#6, (August 1939) by Kenneth Robeson [Harold A. Davis and Lester Dent].
Greene's full name Vernon Van Atta Greene, and he is known to have worked for Street and Smith during this period.