8x10 black and white Packard Co. file photograph of a 1926 Miller 91 race car being checked out by three men, driver behind wheel. Inscribed on photo back: Packard Motor Car Co. Proving Grounds 2.5 mile concrete speedway, Utica, Mich., inauguration ceremonies 14 June 1928; Leon Duray, 91-cubic inch front drive Miller special #4, set closed course one lap record of 148.17-mph, thus did proving ground track become the world's fastest speedway, a title held until the opening of Monza in Italy after WWII.
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