"1869-11-11Z"^^ . . "American politician" . "United States Senator" . "Robert John Walker (July 19, 1801 \u2013 November 11, 1869) was an American economist and statesman."@en . . "Robert John Walker"@en . "Walker, Robert J."@en . . "1801Z"^^ . . "18th" . "1869Z"^^ . "1801-07-19Z"^^ . "4th" . . . . . . . . . "Territorial Governor of Kansas" . .