Actor Lee Marvin from the movie "Point Blank" used as reference for painting. Information from Christopher Dosevski, September 2008.
Frank Giacoia provided uncredited inking on many pages. Nick Caputo specifically notes pages 7; 9-17; 19-34 and 36-39.
The original credits read "STORY: Gil Kane, Robert Franklin". In the reprint it was changed to "STORY: Gil Kane, Archie Goodwin"