Kerr, Robert S. (1896-1963) - traces the life of Oklahoma Governor and U. S. Senator. - http://www.ou.edu/special/albertctr/archives/kerr/KERRPN1.HTM
Oklahombres Online Archives - Dedicated to the careful, correct research and preservation of lawman and outlaw history. The official purpose of supporting, encouraging and promoting education, research, writing and other journalistic efforts and endeavors in that portion of state hist - http://www.oklahombres.org/