He quickly developed a strong interest in and started playing American football not long after arriving in Kansas.

[2] The farm had been initially acquired by her father, Charles H. Grover, a prominent politician and lawyer in the early days of the state of Kansas.

Following a disastrous 0-9-1 season that year, a decision was made by the alumni and university administration to be more supportive of the football program.

[4] In addition, money was raised to subsidize the program, including the funding of the team's first athletic dormitory and training table.

Mosse also obtained an outright lease to play fall games in Exposition Park from Barney Dreyfuss, the owner of the Pittsburgh Pirates, for 20 percent of the gate receipts.

[5] What ensued was a dramatic one year turn around that the saw the University post a 10-0 record, its first undefeated season, in which it outscored opponents 406-5.

[5] However, during the winter following the 1904 season, controversy and scandal erupted when Joe Thompson sought to acquire Mosse's job as coach, combined with apparent complications with the Dean.

Despite having lived in the United States for nearly 50 years, Mosse did not officially become a naturalized US citizen until January 8, 1937, in Van Nuys, California.