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Richard Mertz's Research on Gregorio Cortez
In 1970 Richard Mertz, a graduate student at Texas A&I researched the events of Gregorio Cortez's life for his thesis. He focused on the incident where Cortez kills Sheriff Morris in Karnes County, Texas while being arrested for horse theft. The Texas Rangers captured Cortez and there was a trial. The research includes documents about the Rangers, the court case, correspondence, and newspaper articles concerning the case.