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Mary Dudley (born Mary Elizabeth Goode; April 8, 1912 – March 17, 1964), known as Mary Dee, was an American disc jockey who is widely considered the first African-American woman disc jockey in the United States. She grew up in Homestead, Pennsylvania, and then studied at Howard University for two years. After having her family, she attended Si Mann School of Radio in Pittsburgh, and on August 1, 1948, went on the air at WHOD radio. Gaining national attention, Dee broadcast from a storefront, "Studio Dee", in the Hill District of Pittsburgh from 1951 to 1956. She moved her show, Movin' Around with Mary Dee, to Baltimore and broadcast from station WSID from 1956 to 1958. In 1958, she moved to Philadelphia and hosted Songs of Faith on WHAT until her death in 1964.
Dee is considered a pioneer in developing the radio format that combines coverage of community affairs with music and news. She was one of the first two black women admitted to the Association of American Women in Radio and Television, and was successful in campaigning for the organization to forgo meetings in segregated facilities. During her lifetime she received numerous awards for her civic work. In 2011 she was honored posthumously with the Thomas J. MacWilliams Lifetime Achievement Award from the Media Association of Pittsburgh.