mumford led texas college to 1 black college football national championship and southern to 5 black national championships. he also coached texas college to 2 and southern to 11 southwestern athletic conference football championships. during one particular stretch between 1948 and 1951, his teams posted a 38-game unbeaten streak. in addition, he coached southern to the 1941 black national championship in basketball by taking the national intercollegiate invitational tournament in cincinnati. he also served as athletic director while at southern.