Fourteen RB-50Bs were modified at Wichita for special photographic
missions under the designation RB-50E. Their serials were as follows:
47-118/127 Boeing B-50B-40-BO Superfortress c/n 15802/15811 119,120,122/127 modified as RB-50E for special photographic missions. 47-128/137 Boeing B-50B-45-BO Superfortress c/n 15812/15821 128/132, 135 modified as RB-50E for special photographic missions.
The crew was normally ten. According to the mission being flown, the left-side gunner could serve as a weather observer or as an inflight refuelling operator. The full armament of five electrically- operated turrets was initially retained, but was later removed on most of the RB-50E aicraft.
The RB-50E served well into the 1960s.