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IMCA Sprint Car race
I-35 Speedway, Mason City, IA
August 11, 1957
20 laps on 0.5 mile dirt oval; 10 miles

Fin	St	Driver	#	Owner	Car	Laps	Money	Status	Laps Led
1	1	Bob Cleberg	4		Offenhauser	20		running
2		Bobby Grim	2	Hector Honore	Offenhauser	20		running
3		Fred Tegtmeier				19
4		Ed Loetscher

Notes: Bob Wright was killed in an accident during qualifying.
Other entrants included: Lou Holland, Jimmy Jones, Ken Gottschalk,
Don Carr, Duke Hindahl, R.B. Hensley, Earl Wgner, and Wally Roberts.
Time of race: 00:08:16
Average Speed: 72.448 MPH
Pole Speed: 28.33 seconds
Attendance: 2,700