Rudolf Caracciola
With less than a month to go before the track officially opened for practice, entries continued to pour in. Cars were entered for Harry O'Reilly Schell, "Raph", Emil Andres, George Barringer, Joel Thorne, Cliff Bergere, Rudolf Caracciola, Tazio Nuvolari, Chet Miller, and several others. By the end of the month, the entry list was up to 44 cars.