William W. Cook House, October 23, 1944. Built for lawyer and corporate law expert, William Cook, the house on 71st Street was a French Renaissance mansion deigned by York & Sawyer. Completed in 1913, the two-story entrance with massive bronze gates and the fifth floor open portico (with tile ceiling by Rafael Guastavino) truly set the building apart from the other structures on the block. Upon his death, Cook donated the home to his alma mater, the University of Michigan, who sold it in 1942. During the middle of the 20th century the house was occupied by foundations that worked in scientific, educational and anthropological research and work. The home was converted back into a single family home in 1992 and remains remarkably similar to its original form.