One day as I was walking around Ann Arbor, I noticed these inside one of the arches of the University of Michigan Law Quandrangle. I wish I knew a little more about them but judging by their appearance, I would be willing to guess they were professors at the time the buildings were built. Note: After posting these on a Michigan site, someone pointed out that these are former Michigan Presidents.
The Law Quad was built between 1924 and 1933 with funds donated by an alumnus, William Cook. The Library is pretty impressive (that's for another page though).
Anyways, here are the gargoyles.