No. 41 Killam Family
This Laredo family’s ranching history dates to 1920 when O.W. Killam, a successful businessman and former state senator, left Oklahoma and set out in search of black gold in South Texas. He found it. Almost a century later, Killam Oil operates in Kansas, Arkansas, Nebraska, and Louisiana in addition to the Lone Star State. O.W. acquired the 80,000-acre Ortiz Ranch in 1940. Subsequent acquisitions included the 100,000-acre Duval County Ranch (now 125,000 acres), and additional properties in West Texas, Oregon, and Montana.
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