Photo of several players for the <a href="https://en.wikipedia.org/wiki/1938_Detroit_Tech_Dynamics_football_team" class="extiw" title="w:1938 Detroit Tech Dynamics football team">w:1938 Detroit Tech Dynamics football team</a> with coach Hal Shileds
Uncredited/The Detroit Free Press
John N. Sabo (October 30, 1938). "Dynamics Ought to Know Shields' System by Now". The Detroit Free Press. p. Sport 5