Louis I. Kahn. (American, born Estonia. 1901–1974). Alfred Newton Richards Medical Research Building, University of Pennsylvania, Philadelphia, Pennsylvania. Structure of typical laboratory tower (final version). 1957–65. Model: wood. 28 1/2 x 23 15/16 x 23 15/16" (72.4 x 60.8 x 60.8 cm). The Museum of Modern Art, New York. Gift of the architect.

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