The public library is a good place to start. You might also consider contacting the UND Alumni Association - (Contact Information).
Found this on google...
Golden Feather Club
The main responsibility of the Golden Feather Club was selecting the University's cheerleading squads, but the club also performed many other activities, including: buying new cheerleading uniforms, presenting a $150 baseball scholarship, awarding the Bill Borovsky Memorial Trophy to the most valuable goalie in the Western Intercollegiate Hockey League (now the WCHA), organizing pep rallies, and routinely traveling to Fargo for basketball games and Minnesota for hockey games. In 1956 the Feathers split the cheerleading squads into freshmen and varsity teams. The club is also credited with creating the "Sammy the Sioux" mascot. The Feathers also organized the King Kold Karnival in 1968.