His number was never retired......
Capt Walter A. "Butch" Luther
The Cambridge Cornhusker Connection in 1940: Luther
Monday, August 5, 2013, by Walt Sehnert
"Butch Luther" in Transcript of an Oral History Interview with DONALD J. KINDT
Infantryman, 10th Mountain Division, Army, World War II. 1994
Kindt, Don _OH 281_.pdf - Wisconsin Veterans Museum p. 10
see also Wisconsin at War, edited by James F. McIntosh. 2002
"Butch Luther" in Duty, Honor, Victory: America's Athletes in World War II...
By Gary L. Bloomfield. 2004, p. 220
"Butch Luther" in Honor on the Line: The Fifth Down and the Spectacular 1940 College Football Season... By Robert J. Scott, Myles A. Pocta. 2012, p.227
"Butch Luther" mentioned in "Second Lieutenant Robert "Bob" Dole" - War Stories III: The Heroes Who Defeated Hitler... By Oliver L. North. 2012
Butch Luther Rose Bowl run at 2.05