Originally the tale was serialized in Astounding Science-Fiction, in January, February, and March of 1941 under the Anson MacDonald byline, of course, and scans of the Hubert Rogers cover art and Schneeman interiors can be seen in the Pulp Magazines page of my Heinlein Cover Art galleries.
Afterward the piece was published in book form in 1949, under this title and also as The Day After Tomorrow. In any event, the cover art for this version of the book, like the others, is posted in my Earlier Adult Works page.
Enjoy!
Rafeeq