Francis Augustus Hamer was an American lawman and Texas Ranger who led the 1934 posse that tracked down and killed criminals Bonnie Parker and Clyde Barrow. Renowned for his toughness, marksmanship, and investigative skill, he acquired status in the Southwest as the archetypal Texas Ranger. He was inducted into the Texas Ranger Hall of Fame. His professional record and reputation are controversial, particularly with regard to his willingness to use extrajudicial killing even in an increasingly modernized society.

Sherman is a city in and the county seat of Grayson County, Texas, United States. The city's population in 2020 was 43,645. It is one of the two principal cities in the Sherman–Denison metropolitan statistical area, and is the largest city in the Texoma region of North Texas and southern Oklahoma.