Full Color, Duotone, and Black and White (#9-46 or 47); Full Color (#47 or 48 onwards)
Standard Golden Age U.S.
Newsprint Interior, Paper Covers (#9-11); Glossy Covers (#12 onwards)
Was ongoing series
On sale date from the publication date found at the Catalog of Copyright Entries, Part 2, Periodicals, New Series, Volume 35, January-December 1940, Numbers 1-4. Second class permit. Copyright number 437786.