On sale date as given in the copyright application as listed in the Catalog of Copyright Entries, Periodicals, January-June 1950, page 54, registration number B237669.
Bob Brown and Christopher Rule ? splash panel only.
Despite Michael's known expertise, he is mistaken on this particular ID. This is NOT by Gene Colan.
The previous entry said: "Rule splash page. info per Michael J. Vassallo's blog: