The designation B-29L was originally assigned to B-29s that were to be converted as receiver aircraft for the British-developed hose-based inflight refuelling system. However, the B-29 receiver aircraft were designated B-29MR instead.
Sources:
-
Warbird History--B-29 Superfortress, Chester Marshall, Motorbooks
International, 1993.
-
The Boeing B-29 Superfortress, Mich Mayborn, Aircraft in Profile,
Doubleday, 1969.
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B-29 Superfortress, John Pimlott, Gallery Books, 1980.
-
Boeing Aircraft Since 1916, Peter M. Bowers, Naval Institute Press,
1989.
- United States Military Aircraft Since 1909, Gordon Swanborough and Peter M. Bowers, Smithsonian Institution Press, 1989.
