Richardson K. Dilworth (August 29, 1898 – January 23, 1974) was an American Democratic Party politician who served as the 91st mayor of Philadelphia from 1956 to 1962. He twice ran as the Democratic nominee for governor of Pennsylvania, in 1950 and in 1962. He is to date the last White Anglo-Saxon Protestant mayor of Philadelphia. Education and early career He was born in Pittsburgh to Joseph Richardson Dilworth and Annie Hunter (Wood) Dilworth. He enlisted in the Marine Corps in World War I and was commissioned as an officer in World War II. In 1938, he joined the law firm of Dilworth Paxson. In 1921 he graduated from Yale University, where he was a member of Scroll and Key and Delta Kappa Epsilon, and lettered for the varsity football team. In 1926 he graduated from Yale Law School, afterwards becoming an attorney in Philadelphia. On August 6, 1935, he married Ann Elizabeth Kaufman. They had a daughter, Deborah, and a son, Richardson Jr. Political career Dilworth had grown up as a Republican, but became a Democrat out of frustration with the city's longstanding Republican machine. Along with Joe Clark and others, he was at the forefront of a post-World War II reform movement in Philadelphia that led to the adoption of a modern city charter that consolidated city and county offices and introduced civil service examinations on a broad scale to replace much of the existing patronage system. Dilworth initially ran for mayor in 1947 against incumbent Republican Barney Samuel. Samuel was seeking his second full term in office, after assuming office following the death of Robert Lamberton in 1941. Dilworth was ultimately defeated by over 90,000 votes; however, the election marked the last time, to date, that a Republican was elected mayor of Philadelphia. In 1949, Dilworth was elected city treasurer, while Clark was elected city controller. Dilworth ran for governor in the 1950 election, losing a close race to John Fine. In 1951, he was elected Philadelphia District Attorney, while Clark was elected mayor. Clark and Dilworth's inaugurations ended a 67-year period of uninterrupted Republican control of the city (and instituted a period of uninterrupted Democratic control which has persisted past 2022). In 1955, Dilworth was elected mayor, defeating Thacher Longstreth. During their tenures as mayor, Clark and Dilworth introduced a variety of reforms and innovations. Among these was extensive high-rise public housing which would, a generation