Dirksen, Everett McKinley (1896-1969), a Republican from Illinois, served as minority leader of the United States Senate from 1959 until his death. A skilled legislator and powerful speaker, Dirksen was probably the most influential senator of the 1960's. He worked closely with every President from Dwight D. Eisenhower to Richard M. Nixon. His deep voice, tousled hair, and theatrical manner made him one of America's best-known public figures.