Art of Football, 1980-2000, University of Michigan Athletics
BASIS North America Committee
Minnesota Vikings, American Football Wiki
A comprehensive timeline of changes to Michigan Football uniforms through the years.
Information about Football-michigan-purdue-1980-program.png on michigan stadium - Ann Arbor - LocalWiki
1980-1989 Michigan Football Uniform Timeline — - Michigan Football History
Finding aid available online - Bentley Historical Library - University
1880 Michigan Wolverines football team - Wikipedia