Central Michigan University have their yearbooks online, comprised of books from a rather spotty selection of years.
The "Chippewa" depicts college life and events at Central through the years. The yearbooks they have are alright, but the unrepresented years miss out on some real Central Michigan football history. The yearbooks they have online miss many of the Chippewas' early conference championship years and only cover one of CMU's six postseason bowl seasons.
The plus side of the project is that it is described as a growing collection
"A growing collection of digitized copies of the CMU Yearbooks known as The Chippewa. Originals are available in the Clarke Historical Library."
Check these Central Michigan yearbooks out and I'll keep an eye on any future additions to the project.
Incidentally, CMU was featured as #99 in Presnap Read's college football countdown.