United States Football League - Wikipedia
Galaxy might not be done acquiring talent as MLS season dawns - Los Angeles Times
Leeds United takeover: EFL approves sale to 49ers Enterprises
Leeds announce EFL approval of sale of club to 49ers Enterprises, Leeds United
Planting the Seeds for a Soccer Relegation Revolution in the U.S., News, Scores, Highlights, Stats, and Rumors
College Football Relegation In Action: 2009
49ers Enterprises increases Leeds United ownership stake to 37% - Leeds United
How the 50 states have helped form the USMNT – and growth of soccer - The Athletic
Charitybuzz: Dinner with 49ers General Manager, John Lynch in Napa Valley June 3