. "1850Z"^^ . . "1939Z"^^ . "cattle baron" . "1939-05-30Z"^^ . "Murdo Mackenzie (April 24, 1850 \u2013 May 30, 1939) was twice (1891\u20131901 and 1922\u20131937) manager of the Scots-owned Matador Land and Cattle Company, and founding president of the American Stock Growers Association, for whom he testified before congress and the Interstate Commerce Commission."@en . "1850-04-24Z"^^ . . . . "Mackenzie, Murdo"@en .