MISTER MYSTERY, Vol. 1, No. 7, September, 1952. Published bi-monthly by Aragon Magazines, Inc., 949 Broadway, New York 10, New York.
Penciller and inker credits corrected by Denys Howard on 20 July 2004 from information provided by Jerry Bails; original penciller and inker credit was "J. C. Bulthulis"