Includes personal family correspondence between the Wittkowers and their son, and between the Olschkis and their children. The papers of the firm include individual files of correspondence with major scholars and collectors. In addition, there is a history of the firm written by Fiammetta Olschki Witt and information about her catalogue raisonné of European travel books, 1990. Included in the papers of the firm is a file on the Serristori archive (1452-195?) with descriptions and the 1982 valuation; a political oddment file with a German anti-semitic leaflet, 1933, and student protest material from the 1960s and early 70s; and three files about the Florence flood, documenting the losses suffered by the firm, 1966-67.

Leo S. Olschki was founder in 1886 of the prestigious publishing house of the same name. Fiammetta Witt née Olschki married Mario Max Witt (earlier Wittkower). She is the granddaughter of Leo Samuel Olschki, and niece of Leonardo Olschki and Cesare Olschki. Mario Witt's parents were Rudolf and Margot Wittkower.

8.75 linear ft.

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Boxes 8-11 restricted until 2025.