the name of Calhoun to Grace Hopper College, effective July 1, 2017. The college's new namesake has a tie to Yale, having received her Ph.D. from there under the direction of Øystein Ore in 1934. The college's new arms, designed in 2017, were intended to represent Admiral Hopper's history, as well as to create a tie to the college's past. The heraldic dolphin represents both leadership and Hopper's career in the United States Navy. The rectangles and circles represent her contributions to mathematics and computer science. The scalloped (engrailed) bar is evocative of waves—and also incorporates a design element of the Calhoun College arms, which featured an engrailed saltire. Unique features The courtyard used to have a popular tire swing, which stood in stark contrast to the Neo-Gothic architecture. In fall 1990, newly appointed master Turan Onat made it his first priority to remove the tire swing as he sought "to restore the courtyard to a grassier state." The seniors immediately reinstalled the swing overnight and Onat quickly reversed his policy. The college used to be the only residential college with its own sauna. The sauna was removed from Entryway B/C during the 2005–06 school year. The College Council is a student governing organization that coordinates activities and social life for the residential college. Throughout the year, the Council organizes numerous activities including: Study Breaks, a dorm-wide dance, and Trolley Night, an annual dance party. Notable alumni Angela Bassett, 1980, actress John R. Bolton, 1970, National Security Advisor of the United States, attorney David L. Boren, 1963, Governor of Oklahoma, US Senator, Chancellor, University of Oklahoma Sandra Boynton, 1974, author Robert Curtis Brown, 1979, actor Jonathan Coulton, 1993, singer-songwriter Claire Danes, X2002, actress (attended) Mark Dayton, 1969, governor of Minnesota Bryce Dessner, 1998, composer and guitarist with The National Jodie Foster, 1985, actress Henry Louis Gates, Jr., 1973, author, literary critic, professor John Hodgman, 1994, comedian Roger Horchow, 1950, Tony Award-winning Producer and founder of The Horchow Finale Paul Krugman, 1974, economist, New York Times columnist, winner of the Nobel Prize in Economics, 2008 Demetri Martin, 1995, comedian Steven Mnuchin, 1985, United States Treasury Secretary Jennie Livingston, 1983, filmmaker George Packer, 1982, journalist, author, playwright Katie Porter, 1996, member of the US House of Representatives. Joshua Prince-Ramus, 1991, architect Philip T. Reeker, 1986, Acting Assistant Secretary of State, diplomat and career foreign service officer Kurt Hugo Schneider, 2010, internet celebrity