A B-17 Flying Fortress (serial number 41-9020) of the 92nd Bomb Group takes off. Passed for publication 4 Sep 1942. Printed caption on reverse: 'A visit to an aerodrome run entirely by American bomber squadron, who are busily engaged preparing their Flying Fortresses and training crews for the coming large scale bombing operations over Germany...4/9/42. O.P.S. A striking study of Flying Fortresses taking the air.' Handwritten on reverse: '19020.' On reverse: Daily Sketch [Stamp]. Print No: 219827.