Black and white lantern slide of a road sign for the "Home of the Minnesota Man," now known as the Pelican Rapids-Minnesota Woman, skeletal remains estimated at 8,000 years old.

Black and white lantern slide depicting the symphysis of chin bones from various specimens, including Chou Kou Tien, a Neolithic Chinese child, a modern human, and a chimpanzee.

Grand Valley professors examine stones at archaeological site

Grand Valley student cleans human skull in anthropology class

Grand Valley students unearth bones at archaeological site

Grand Valley students sifting at Grand River woodland archaeological site, August 1970.

Grand Valley students digging at archaeological site