Ulrich Middeldorf (1901-1983): born in Strassfurt in 1901, he studied art history at the Universities of Giessen, Munich and Berlin.

From 1926 to 1935 he took care of the photo library of the Kunsthistorisches Institut in Florenz, of which he was then director (1953-68), after having taught (1935-53) at the University of Chicago where he was conservator of the sculpture department of the Art Institute of Chicago.

Middeldorf studied art history in Giessen - Christian Rauch, in Munich - Heinrich Wölfflin and finally in Berlin with - Adolf Goldschmidt, where he received his doctorate in 1924 with the dissertation "Die thöring.

Middeldorf moved to the United States in 1935, where he served as Professor and Chairman of the Art Department at the University of Chicago, as well as a permanent consultant and initiator of the city's museum and exhibition space.