Max Allan Collins, in the opening introduction, states that Junior was the only character carried over from 'Dick Tracy' 1937. He was wrong. Gwen Andews, Mike McGurk and Steve Lockwood were present also.
In Chapter: 11, when Pa Stark and his gang escape up the fire escape, there is no building next to the one that they are on. Once they reach the roof, there is now a building next to theirs, that they can get too by means of a plank.
In Chapter: 5, when Mike (Lee Ford) runs into the cave and the crooks block the entrance, the boom mic shadow can be seen in the upper right.