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Clark, Alvan

(Encyclopedia)Clark, Alvan, 1804–87, American astronomer and maker of astronomical lenses, b. Ashfield, Mass. In 1846 the firm of Alvan Clark & Sons was established at Cambridgeport, Mass.; it became famous a...

Mitchell, Maria

(Encyclopedia)Mitchell, Maria, 1818–89, American astronomer and educator, b. Nantucket, Mass. Mitchell taught school in Nantucket, and later became a librarian. On Oct. 1, 1847, Mitchell discovered a comet (1847 ...

Clark, Abraham

(Encyclopedia)Clark, Abraham, 1726–94, political leader in the American Revolution, signer of the Declaration of Independence, b. Elizabethtown (now Elizabeth), N.J. After holding several local offices, Clark bec...

Clark, Champ

(Encyclopedia)Clark, Champ (James Beauchamp Clark), 1850–1921, American legislator, b. near Lawrenceburg, Ky. After a career as lawyer, newspaper editor, and politician in Missouri, he was (1893–95, 1897–1921...

Clark, Colin

(Encyclopedia)Clark, Colin, 1905–89, British economist. A statistics professor at Cambridge (1931–37), he taught in Australia and Great Britain until 1952, serving as economic adviser to the governments of both...

Clark, Dick

(Encyclopedia)Clark, Dick,, 1929-2012, American radio and TV broadcaster and producer, b. Bronxville, N.Y., as Richard Wagstaff Clark; Syracuse Univ. (B.A., 1951). Be...

Clark, Helen

(Encyclopedia)Clark, Helen, 1950–, New Zealand politician, prime minister (1999–2008), b. Hamilton, N.Z. A graduate of the Univ. of Auckland (B.A., 1971; M.A., 1974), she taught political science there (1973–...

Clark, Joe

(Encyclopedia)Clark, Joe (Charles Joseph Clark), 1939–, prime minister of Canada (1979–80), b. High River, Alta. He entered the Canadian House of Commons from Alberta in 1972 and became leader of the Progressiv...

Clark, John

(Encyclopedia)Clark, John, 1766–1832, governor of Georgia (1819–23), b. Edgecomb co., N.C. As a boy he served with his father, Elijah Clarke, in the American Revolution and afterward won distinction as an India...

Clark, Ramsey

(Encyclopedia)Clark, William Ramsey, 1927–2021, attorney general of the United States (1967–69), b. Dallas, Tex., Univ. of Texas-Austin (BA, 1949), Univ. of Chica...