On the side of the Willis Library is a plaque titled "A. M. Willis, Jr. Library". Get the information off this plaque to get the coordinates for the final cache.
For the purposes of this cache, the first line of the sign reads "A. M. Willis, Jr. Library"
The cache is hidden at N 33 12.ABC W 97 08.XYZ
A = Number of letters in the first word of the fifth line of the sign
B = First digit at the bottom of the sign
C = Number of letters in the first word of the fourth line of the sign - number of letters in the first word of the seventh line of the sign
X = Number of letters in the third word of the tenth line of the sign
Y = Number of words in the former university name at the bottom of the sign
Z = Number of letters in the fifth word of the eighth line of the sign - number of letters in the second word of the 15th line of the sign
You can validate your puzzle solution with certitude.