High Quality Content by WIKIPEDIA articles! The New York Giants, an American football team which plays in the National Football League (NFL), have had a long, and at times turbulent financial history. The Giants were founded in 1925 by businessman and bookmaker Tim Mara with an investment of US$500, and became one of the first teams in the then five-year-old NFL. Mara passed ownership of the team on to his sons Wellington and Jack after the 1929 Stock Market Crash to insulate the team from creditors. At first the Mara sons owned the team in name only, but they took increasingly larger roles in the organization beginning in the mid 1930s. Tim Mara remained involved in the team`s operations until his death in 1959, when his sons assumed full control of the club. After Jack`s passing in 1965, his son, Tim, took over his share of the team.