(1855–1937), U.S. financier. Andrew W. Mellon was born in Pittsburgh, Pa., on March 24, 1855. He began his career as a banker but developed interests in the petroleum, aluminum, coal, and coke industries as well. He was a prominent figure in the industrial development of Pittsburgh, and with his brother he founded the Mellon Institute of Industrial Research. He served as secretary of the treasury under Presidents Harding, Coolidge, and Hoover, and was the United States ambassador to England in 1932–33. In 1937 he presented a $50,000,000 art collection to the United States along with funds to build the National Gallery of Art in which to house the collection. (See also Industry.)