The Army CH-47A (HC-1B) troop and cargo helicopter of the 11th Air Assault Division training, being loaded for delivery and instantaneous emplacement of the LITTLE JOHN missile.
U.S. Department of the Army
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/pt?id=umn.31951d00831253j;view=1up;seq=1404">Annual Report of the Secretary of the Army for Fiscal Year 1964</a>, Page 128, Figure 4