After the terrible governorships of the late 20s & early 30's, it wasn't until the 1960s that major scandals again surfaced, and then they did so with a vengeance. Three justices of the Oklahoma Supreme Court were removed from office by impeachment or resignation arising from IRS investigations of reports that justices were taking kickbacks for favorable decisions. A powerful former speaker of the Oklahoma House of Representatives, who had been a dominant figure in state government, was convicted and sent to jail as a result of IRS investigations arising from charges that he failed to report income received in return for political favors. Then in 1975 a former governor, David Hall, was convicted, shortly after leaving office, of misusing his powers of office by trying to direct a state retirement fund to help a friend with a loan. Again, federal officials were the chief agents in cleaning up the corruption.Harry Holloway, of the Oklahoma Historical Society.