and much of the decoration commemorates distinguished university graduates. The gate beneath Harkness Tower, crafted by Samuel Yellin, is the most ornate of his many works at Yale. G. Owen Bonawit designed unique stained glass windowpanes for each student room. Residential college integration From 1921 to 1929 the building housed Yale College seniors. In 1928, a donation from Edward Harkness began Yale's residential college system, the buildings of which were also planned and designed by Rogers. Rogers split the Quadrangle into two residential colleges—Saybrook and Branford, so named for the courtyards they contain—and added mid-sized elements such as masters' houses, fellow's quarters, and dining halls. During the conversion, the "Gold Coast" of student rooms in the middle of the Quadrangle was hollowed out to make way for the Saybrook College dining hall. The colleges opened on September 25, 1933. Influence The Memorial Quadrangle became the template for Yale's residential college system. First announced as a "Quadrangle Plan," the colleges were built around the same courtyard and dining hall design pioneered. In addition to the two colleges that were created within the Memorial Quadrangle, six others—Jonathan Edwards, Davenport, Calhoun, Trumbull, and Berkeley—followed the same Collegiate Gothic style. Because of his initial work on the Memorial Quadrangle, Rogers became the de facto architect of Yale's central campus through the 1920s and 1930s: eight of the ten early residential colleges were his design, as were Sterling Memorial Library, Sterling Law Building, and the Hall of Graduate Studies. Many of the artisans who worked on the Memorial Quadrangle with Rogers, including G. Owen Bonawit and blacksmith Samuel Yellin, were commissioned again for these later buildings. The quadrangle was an antecedent of the Collegiate Gothic style used throughout the United States, and of large residential campuses of the 20th century, including Harvard College and Rice University. In particular, plans for creating a residential undergraduate campus at the University of Chicago made heavy reference to the Memorial Quadrangle. References Further reading Buildings and structures completed in 1921 1921 establishments in Connecticut Yale University buildings Courtyards