Notes:
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. The date recorded in the Catalog is July 27, 1947; however, this would appear to be in error as the next issue (#70) has a publication date of July 1, 1947. The correct date would appear to be May 27, 1947.