#7 Heinz Vopel, of Dortmund, Germany, and Gerard Debaets, of Belgium, ride in front of the field at the start of a six-day race at the Chicago Stadium, 1939.

From Penny-Farthings to Ten-Speeds: The Wild Story of Chicago’s Great Cycling Craze

#7 Heinz Vopel, of Dortmund, Germany, and Gerard Debaets, of Belgium, ride in front of the field at the start of a six-day race at the Chicago Stadium, 1939.

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