The "GSH" on the sleeve of the Chicago Bears jersey is the initials of founder and longtime player, owner and coach George S. Halas. The initials were added to the uniform at the start of the 1984 season.
Prior to his death on October 31, 1983, Halas was the lone owner of the franchise since 1920, when the team was known as the Decatur Staleys. He served as head coach of the organization for 40 seasons, guiding the team to 324 total victories. Halas also played nine seasons for the Bears himself. In addition, he excelled on the diamond, appearing briefly for the New York Yankees. Halas was inducted into the Pro Football Hall of Fame in 1963.