97th Bomb Group B-17F attacking Messina Italy 8 May 1943.
United States Army Air Forces
1943
United States Army Air Forces via Hess and Styling (2003), B-17 Flying Fortress Units of the MTO (Combat Aircraft) Osprey Publishing, <a href="//commons.wikimedia.org/wiki/Special:BookSources/1841765805" title="Special:BookSources/1841765805">ISBN 1841765805</a>