On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, 1940, Number 2. Second class permit. Copyright number 443883.
Previous indexer assigned script also to Schwab. We cannot corraborate.
Signs of Sid Greene in the inks seen by all three indexers. Could be coincidence, but seems consistent in early Celardo stories.