in Supermen! The First Wave of Comic Book Heroes 1936-1941 (Fantagraphics, 2009 series) #[nn] ([February 15] 2009)
in Silver Streak Comics (Lev Gleason, 1939 series) #[22] (February 1946)Ricca is best to pick out by his faces with rounded jaw and chin with a bump in the middle, and squinting eyes which later became more visible. His male faces may look a bit "fat" along the jaw.