"1818-11-18Z"^^ . . "Harkness, Stephen"@en . . "1888-03-06Z"^^ . . . "Stephen Vanderburgh Harkness (November 18, 1818 \u2013 March 6, 1888) was an American businessman from Cleveland, Ohio, who invested as a silent partner with oil titan John D. Rockefeller, Sr. in the founding of Standard Oil. He was a director of Standard Oil until his death."@en . "1888Z"^^ . . "American businessperson" . . . "1818Z"^^ . . . "Stephen Vanderburgh Harkness"@en . . . . . .