Coleman was born to Laura Beatrice (née Mason) Coleman and William Thaddeus Coleman Sr. in Germantown, Philadelphia, Pennsylvania.[1] Coleman's mother came from six generations of Episcopal ministers, including an operator of the Underground Railroad.[1]W.E.B. DuBois and Langston Hughes would visit the family's home for dinner.[1] One of seven black students at Germantown High School, Coleman was suspended for cursing at a teacher after she praised his honors presentation by saying, "Someday, William, you will make a wonderful chauffeur."[1] When Coleman attempted to join the school's swim team he was again suspended, and the team disbanded after he returned so as to avoid admitting him, only to reform after he graduated.[1] Coleman's swim team coach wrote him a strong letter of recommendation and he was accepted into the University of Pennsylvania, where he was a double major in political science and economics.[1]
He served as a member of the NAACP's national legal committee, director and member of its executive committee, and president of board of the NAACP Legal Defense and Educational Fund. Coleman was also a member of President Dwight D. Eisenhower's Committee on Government Employment Policy (1959–1961) and a consultant to the U.S. Arms Control and Disarmament Agency (1963–1975). Coleman served as an assistant counsel to the President's Commission on the Assassination of President Kennedy (1964), also known as the Warren Commission, on which then-Congressman Gerald Ford was a commissioner.[1]
During the Warren Commission's investigation into the assassination of John F. Kennedy, the commission received word via a backchannel that Fidel Castro, then Prime Minister of Cuba, wanted to talk to them. The Commission sent Coleman as an investigator and he met with Castro on a fishing boat off the coast of Cuba. Castro denied any involvement in the assassination of President Kennedy during Coleman's three-hour questioning. Coleman reported the results of his investigation and interview with Castro directly to Commission Chairman Earl Warren, the Chief Justice of the United States.[9]
Coleman was co-counsel to the petitioners in McLaughlin v. Florida (1964), in which the Supreme Court unanimously struck down a law prohibiting an interracial couple from living together.[1] In 1969, he was a member of the U.S. delegation to the twenty-fourth session of the United Nations General Assembly.
Coleman was also a member of the National Commission on Productivity (1971–1972). Coleman served in the boardrooms of PepsiCo, IBM, Chase Manhattan Bank, and Pan American World Airways.[1] He was senior partner in the law firm of Dilworth, Paxson, Kalish, Levy & Coleman at the time of his appointment to the Ford Administration.
On leaving the department, Coleman returned to Philadelphia and subsequently became a partner in the Washington office of the Los Angeles-based law firm O'Melveny & Myers. Colman argued a total of 19 cases before the Supreme Court.[1] He appeared for the respondent in the argument and reargument of Garcia v. San Antonio Metropolitan Transit Authority (1985). In 1983, with the election quickly approaching, the Reagan administration stopped supporting the IRS's position against Bob Jones University that overtly discriminatory groups were ineligible for certain tax exemptions. Coleman was appointed to argue the now unsupported lower court position before the Supreme Court, and won in Bob Jones University v. United States.[16]
^ ab"Military Commission Review Panel Takes Oath of Office". United States Department of Defense. 2004-09-22. Archived from the original on 2008-10-23. Retrieved 2008-11-02. William T. Coleman Jr., Ford administration secretary of transportation. Coleman's public service includes advisory or consultant positions to six presidents. Coleman was a member of the U.S. delegation to the 24th session of the United Nations General Assembly in 1969. He graduated magna cum laude from Harvard Law School in 1946.
^"Flights are tests for SST". Spokesman-Review. (Spokane, Washington). (Washington Post). February 5, 1976. p. 1.
^Turner, Daniel (2002). Standing Without Apology: The History of Bob Jones University. Greenville, SC: BJU Press. p. 230. ISBN1579247105. On April 19, the Court announced that it would not allow the NAACP to join the case, and in a step considered unprecedented by legal scholars and 'extraordinary' even to the NAACP's leadership, the Supreme Court appointed a prosecutor of its own—black attorney and civil rights activist William T. Coleman. Bob Jones III commented that 'this puts the court in the position of creating an issue to be litigated and insisting that an issue be heard when one of the two litigants declares 'no contest'.
Todd C. Peppers, "William Thaddeus Coleman, Jr.: Breaking the Color Barrier at the US Supreme Court." Journal of Supreme Court History 33.3 (2008): 353–370. online