Writer credit from Ed Silverman interview in Alter Ego magazine #120 (TwoMorrows, September 2013).
Script credit from Robin Snyder's The Comics!, taken from Paul S. Newman's personal records.
Sparling is credited to G.I. Joe for 1952 by Jerry Bails' Who's Who, and the round faces with big eyes are sure Sparling art.
Script credit from Robin Snyder's The Comics!, taken from Paul S. Newman's personal records.