Most information for this issue provided by Ger Apeldoorn (March 2011).
Zolnerowich is credited to Hillman covers in 1948-53 by Jerry Bails' Who's Who, and the smiling faces and smooth inking is quite identical to other signed covers in this series.
Raab is credited to Hillman crime stories 1948-49 by Jerry Bails' Who's Who, and this artwork is identical to his signed work in Western Fighters #v1-12 "The Man With the Whip". Just look at the peculiar fish eyes and bulging foreheads. The inking can remind a little of Frank Robbins.
Zolnerowich is credited to Hillman crime stories in 1948-53 by Jerry Bails' Who's Who, and the inking and smiling faces here are identical to his signed covers. Other clues are the long downward wrinkle lines on the upper arm of suits, and much black inside the ears and at the corner of the mouth when smiling.