Tilting figures with long upper body and awkward way of standing and walking, some wild eyes, and also broad shoulders and narrow head on stretched neck are all pointing to Zolnerowich. He is credited on both pencils and ink on this feature by Jerry Bails' Who's Who, but inking vary, so uncertain.
Heads in 3/4 backview with streched neck and the jawbone going back behind the ear, even in side view, is peculiar. Also the long nose and chin are special. This can be found in his credited "Mike Gibbs Guerilla" story in Adventure Comics #88 and several credited Marksman stories with identical art in Smash Comics #53 and 54. The jawline behind the ear can be found in other stories in this feature too, but not so marked together with the long nose, chin and neck as here. This one is certain, the others not so.