Nebraska Book Company is one of the largest college textbook store chains in the United States. It has a near monopoly on college textbook sales in Washtenaw County owning two of the three stores at the University of Michigan, three of the four stores serving Eastern Michigan University, and one of the two stores serving Washtenaw Community College.

http://www.nebook.com/

NBC stores in the Ann Arbor Area:

More Michigan locations, for reference.