Notes:
The on-sale date is the publication date reported in the U. S. Copyright Office filing in the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 34, 1939, Number 4. Second class periodical. Copyright number 432477. Produced by Chesler Publications for the fledgling M.L.J Magazines, Inc. Louis H. Silberkleit is recorded as editor on the first published Statement of Ownership for October 1st, 1939. Abner J. Sundell was working as editor for Louis Silberkleit's pulp publications and could have acted as editor on the early M.L.J comic books.