There are 14 books containing the phrase "Mimi, the college widow" on Archive.org (click). Of particular interest is a long version of the text from the 49th Tactical Fighter Wing (undated, est. 1960s) which appears to combine school songs from Cornell, Georgia Tech, Cornell, and Wisconsin.

MIMI

Mimi, the college widow
Pride of the University
Mimi the college widow
She taught all the boys anatomy
 (anatomy Rah Rah Rah)

Mimi the college widow
Down at old Cornell
Mimi met a football hero
Shot the team to Hell

She met a Bamblin Reck [sic: Ramblin' Wreck]
From Georgia Tech
And a hell of an engineer
He was something of an Architec
And he left his Blueprints Here
(Where? Here Where? Here)

At Wisconsin, At Wisconsin
Mimi met an All American
Called his signals
Rushed her Center
Set her on her Rear
(Rah Rah Rah)

Speak--Now Mimi won a letter
 She's as proud as she can be
 You ask her if she made the team She says,
 "Hell no the whole damned team made me."

Mimi the college Widow
Pride of the University
Mimi the college Widow
She taught all the boys anatomy
 (anatomy Rah Rah Rah)

Mimi the college Widow
To know her is to love her that's for sure
She laid the corner stone of Knowledge
In fact the whole damn college
That's Mimi the College Lure
----the word is "LURE"

From 48th Tactical Fighter Wing (TFW) Hym-m-m-nal, circa 1960s

There's another version comparing Mimi to a camel at the link above, so definitely check those resources out.