The book itself is undated anywhere. Date is a best guess based on William Woolfolk's records and Keltner's Index.
Woolfolk's records indicate he wrote at least one Black Raider story. This is probably it.
Previously appeared in Mask Comics #2.
Art ID by David Saunders at <http://www.pulpartists.com/Emerson.html> (September 2013).
Woolfolk's records for this period indicate he wrote at least one Miss Espionage story and this is probably it.
credits from Jerry Bails' Who's Who. Previously appeared in Mask Comics #2