The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Third Series, Vol. 2, Part 2, No. 1, Periodicals, January-June 1948.
Captain Midnight [Captain Jim "Red" Albright]; Ichabod "Icky" Mudd; the Neptunian People; Jagga (villain, mention only)
Synopsis
After the battle with Jagga, Cap and Icky stop off on Neptune, saving a young child left behind because of an advancing glacier. They take him to a group of Netunians hiding in a cave, then head out to use atomic bombs on the glacier, thus preventing an ice age.