John Marshall Harlan ( May 20 , 1899 -- December 29 , 1971 ) was an American jurist who served as an Associate Justice of the Supreme Court from 1955 to 1971 .
John Marshall Harlan ( May 20 , 1899 -- December 29 , 1971 ) was an American jurist . He served as an Associate Justice of the Supreme Court from 1955 to 1971 .