We had suggested Reed Crandall as the artist, but Crandall expert Roger Hill denied that attribution. Bryant pencils credit per Hill.
Woolfolk credit from Martin O'Hearn.
Corrected art credits added by Craig Delich (2006-11-19). Formerly listed as Alex Kotsky ? Corrected name of the chief villain, from Professor Moray to Professor Piranha per Jim Amash in the Quality Collector (TwoMorrows, 2011).
Jerry Bails' Who's Who suggests Al Bryant left comics in 1947.