A plea to the members of the UC community:

As more puzzles were solved, the original letter to the regents disintegrated into the following rebus puzzle:

When read aloud,

"Goat tooth ear hound won no frown two-outs eye drown tree"

sounds like the phrase

"Go to the <round one> of <round two> outside <round three>",

giving instructions for where to begin the runaround:

GO TO THE CARTOGRAM OF CAMPUS OUTSIDE I-HOUSE.

Upon going there, teams found instructions for the endgame...