Indexed from a scan from http://digitalcomicmuseum.com.
Tuska is credited on "Crime and Punishment" by Jerry Bails' Who's Who, and the faces are the best clue. His work has very similar faces to Pete Morisi, so they are sometimes mixed up, but the eyes and ears are a little different, and Morisi is not credited on this series by Jerry Bails' Who's Who.
Rockwell has many signed illustrations in Lev Gleason's Black Diamond, and most are signed DS, but some, with similar artwork, are signed with his whole name.
There is an illegible signature something like "M Wle."
According to Jerry Bails' Who's Who, the signature must be the pen name "M.WALD", Morris Waldinger. He is credited on "Crime and Punishment" by Jerry Bails' Who's Who.