Quarterback "Boss" Weeks and coach Fielding Yost, UM Football, 1901

[Yost is wearing his undergraduate Lafayette College sweater]

UM Football, cartoon titled "Forward Pass From Michigan to Minnesota" from 1909 Michiganensian

[shows Michigan player passing ball labeled "Conference" to Minnesota with another worried looking player wearing sweater labeled "STAGG" in background]

No name, 1936

[A man in a sweater leans against the hood of a car with one hand in this pocket, more cars can be seen parked in the background]