Art identification by Ger Apeldoorn. His other guess for penciller is Ray Bailey.
Spread across the middle of the centerfold of the book.
Art identifications per Ger Apeldoorn and Nick Caputo. Ger originally credited John Spranger as a possible penciler along with Powell.
credits per Nick Caputo, January 2015.
Doris Bigelow may be a pen-name.