Huff-Daland XB-1
Curtiss B-2 Condor
Keystone B-3A
Keystone B-4
Keystone B-5A
Keystone B-6
Boeing YB-9
Martin B-10B
Boeing XB-15
(prototype)
Boeing B-17B
Flying Fortress
Douglas B-18A Bolo
Douglas XB-19
(experimental)
North American XB-21
(prototype)
Douglas B-23 Dragon
Consolidated B-24 Liberator
North American B-25
Mitchell
Douglas B-26 Invader
Martin B-26 Marauder
(later A-26)
North American XB-28
(prototype)
Boeing B-29
Superfortress
Lockheed XB-30
(model, none built)
Consolidated B-32
Dominator
Convair B-36
Peacemaker
North American RB-45C
Tornado
Boeing B-47E
Boeing B-50
Superfortress
Boeing B-52
Stratofortress
Martin B-57A
Canberra
Convair B-58A
Hustler
Douglas B-66
Destroyer
North American XB-70
Valkyrie (prototype
General Dynamics FB-111
Aardvark
Rockwell B-1B
Lancer
Northrup Grumman B-2
Spirit
Northrup Grumman B-21
Raider
