On sale date from the publication date found in the Catalog of Copyright Entries, Third Series, Volume 15, Part 2, Number 1, Periodicals, January-June 1961. Second class permit. Copyright number B881745.
Inside front cover.
letters submitted by Bill Slaten; Mike Mahoney; David Schaefer; Renee Rosenman; Linda Breitman; Sharon Johnston; Mike Cox; Calvin Rush; Tom McGeehan; John McGeehan
house ad for Rip Hunter... Time Master (DC, 1961 series) #1 (March-April 1961)
published in cooperation with the National Social Welfare Assembly
membership application form for the Supermen of America; also includes message in secret code (Code Saturn No. 5)
decoded message reads: "Clark Kent left Smallville and moved to Metropolis when he was twenty years old."
Inside back cover.