The football team was annointed “Purple Pounders” during football season of 1937, but when were the Anvil and Hammer symbols adopted?

Working backward, the earliest photo I’ve found is in 1944 Champion – The footbal coaching staff are wearing tee shirts with anvil and hammer printed on the front. You can view a copy of this photo in Charlie Sedman’s football history articles.

I would love to know the story behind our beloved Anvil and when it was first represented our Purple Pounders.