Art credits from JVJ.
JVJ has a doubtful Bryant as penciller.
JVJ has Crandall only on pencils, but the inking is so similar to Crandall's inked stories in the Warren magazines of the 60s
that this is most probably all his work.
JVJ notes at Digital Comics Museum have these two doubtful pencilers. Inking looks much like the work on many of the Manhunter stories, especially faces.