Notes:
The on-sale date is the publication date reported in the U. S. Copyright Office filing found in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 4. Class B periodical. Copyright number B 432170.
Per Fawcett Distributor trade magazine v3#7 (October 1, 1939), Fawcett Distribution Corporation was the distributor of this comic book