Which Midwestern U.S. cities became important for four-wall soft-ball handball?

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The four-wall soft-ball version of handball gained significant popularity in several Midwestern U.S. cities. Specifically, the game was taken up avidly in:

Detroit
Cleveland
Milwaukee
Chicago

This development occurred as the use of the soft ball—initially a tennis ball with its outer covering removed—spread from the New York City area to other regions of the United States.1