The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Third Series, Vol. 1, Part 2, Nos. 1&2, Periodicals, 1946-1947.
From Phantom daily strips (King Features Syndicate) 1943-09-18, 1943-09-20 - 1943-09-25, 1943-09-27 - 1943-10-01. [Two daily strips per page, but some panels are stretched or clipped in order to fit them to the comic's pages, and a few panels are omitted.]