Short answers, pulled from the story.
Paul Parduhn and Dr. Alva Young established the Hammond Pros in 1920. They built upon a foundation laid by earlier semi-professional squads that Young had operated from 1915 to 1917 as both doctor and trainer.
The Hammond Pros played all its home games in Chicago instead of at A. Murray Turner Field in Hammond. The team used Cubs Park in Chicago as an unofficial home stadium because the local town stadium seated only a few thousand people and was built for baseball.
Fritz Pollard served as head coach for the Hammond Pros in 1923 and again in 1925, becoming the first Black head coach in NFL history. He received induction into the Hall of Fame in 2005 after his tenure ended.
The combined record across seven seasons stood at five wins, twenty-six losses, and four ties. The franchise ceased operations following the 1926 season without any further activity after playing 34 games over seven years.
The Hammond Pros folded shortly after the NFL decided to scale down operations and reduce its number of teams to twelve total franchises in 1927. This decision resulted in getting rid of many smaller franchises including the Pros who could not survive the league's reduction strategy.