Created by Dayton, Ohio, publisher George A. Pflaum and debuting March 12, 1946, as "Treasure Chest of Fun & Facts", "Treasure Chest" was distributed in parochial schools and published biweekly throughout the school year until the 1960s, when it became monthly and doubled the number of pages. It was available solely by student subscription, and delivered in bulk to classrooms. Initially, the covers were of the same paper stock as the interiors; comic books' more typical slick covers were added in 1948. Six-issue summer editions were published in 1966 and 1967.