Two years later , he bought a master 's degree in history from Southwest Missouri State University ( then Missouri State University ) . Two years later , he earned a master 's degree in history from Southwest Missouri State University ( then Missouri State University ) .
Dua tahun kemudian, beliau membeli ijazah sarjana dalam sejarah dari Southwest Missouri State University (kemudian Missouri State University). Dua tahun kemudian, beliau memperoleh ijazah sarjana dalam sejarah dari Southwest Missouri State University (kemudian Missouri State University).