7.5x9.5 black and white Packard Co. file photograph of two 1926 Miller 91 race cars on track at proving grounds. Inscribed on photo back: Packard Motor Car Co. Proving Grounds 2.5 mile concrete speedway, Utica, Michigan, inauguration ceremonies 14 June 1928; Leon Duray, 91-cubic inch front-wheel drive Miller special #4, & Norman Batton, #22, a rear-wheel drive Miller 91 coming out of curve at 140-mph.
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