 In the 1950s, Hugh and Bill Liedtke had an office next to that of the Bush-Overbey Oil Development Company run by future United States President George H. W. Bush and Bush's neighbor, John Overby.In 1950s, the Liedtke's, Bush, and Overby formed the Zapata Petroleum Corporation.Zapata eventually merged with Pennzoil, and the Liedtkes took over United Gas Pipeline in 1956.