A corporate historical timeline compiled from A Chronicle Of The Aviation Industry In America 1903 1947, subtitled "A Salute To The Aviation Industry" entries details the rather complicated history of Jack Northrop's airplane-manufacturing companies.
- A-17 single-engined attack bomber. Production was taken over by Douglas as the 8A-5/A-33
- BT-2 dive bomber design was taken over by Douglas and became the highly successful SBD Dauntless
- N-3PB single-engined three-place patrol/torpedo bomber floatplane designed for export.
- "N-3PB Patrol Bomber" [ HTML ] is an introductory article outlining the characteristics of the plane.
The article includes a photo of the plane in flight, seen from roughly 3 o'clock.
- "Aviation's Sketchbook of Design Detail" for August, 1940, shows the engine installation.
- A Norma-Hoffman Bearings Corp ad [ photo ] shows an N-3PB in flight, seen from 2 0'clock, slightly low.
- A Northrop ad, "Nordic Northrops
," features a drawing of an N-3PB in flight, seen from 10 o'clock.
- A Roller Bearing Co of America ad, RBC Aircraft Series #4, shows an N-3PB in flight, seen from 8 o'clock.
- XB-35, YB-35 Flying Wing developmental four-engined flying-wing long-range bomber; embedded engines, pusher props.
- "I Flew 'The Wing'" [ HTML ] is a first-person account by the test pilot of the initial flight of the Flying Wing.
- XP-56 Black Bullet experimental flying-wing fighter design. Aft-mounted pusher prop.
- P-61 Black Widow purpose-built two-engined night fighter.
- "Planes not promises for the RAF" shows a worker in the cockpit of (probably) an A-17 on the production line.
- "Nordic Northrops
", features a drawing of an N-3PB in flight, seen from 10 o'clock.
- "Magnesium, Cinderella of metals," cites Northrop's involvement in the development of the Heliarc welding process.
- "Prediction: Postwar freight will fly
at less than 15 cents a ton-mile," looks forward to air freight in a postwar world.
- "Another new Northrop technique to build US warbirds faster," features a drawing of the left engine nacelle of a P-61 (unidentified) showing prop, spinner, air intakes in wing, cowl flaps open. An inset shows a Rosie running a cowling piece through a spotwelder.
- "In this Northrop Gamma the US learned about 6-mile-high flying" features a drawing of a Gamma from directly above.
- "In peacetime Northrops
you'll fly further, cheaper, than you've ever flown before looks to postwar civil aviation.
- "To the ladies, God bless them!" features a color drawing of two Rosies working on a tail boom of a P-61 (unidentified).
- "Look up
quick! it's a Black Widow" features a drawing of two GIs looking up at night.
- "Black Widow is the name and the general idea" features a drawing of a Black Widow spider, seen from below with the moon in the background above.
- "Northrop Black Widow P-61 Night Fighter features a color drawing of a P-61, seen from 10 o'clock low.
- "This big black battlecruiser is the first true night fighter" features a color drawing of a P-61 seen from 2 o'clock low.
- "Big as a bomber, fast as a fighter
the first US warplane ever designed especially for night fighting" features a color drawing of a P-61 on the ground, seen from just outside the right wing tip.
- "There's a lot of Tomorrow in the Northrop Black Widow" features a color drawing of a P-61, seen from directly above the right outer wing root.
- "The big Northrop Black Widow combines all three great speed, tight turns, slow landings" features a color drawing of three P-61s in landing pattern and two line drawings contrasting conventional aileron-flap combinations with the Northrop retractable aileron-full-span flap design.
- "Retractable ailerons
." shows drawings of the retractable ailerons and full-span flaps, along with a drawing of P-61s taking off from a tropical isle.
- "There's more to it than meets the eye" features a black-and-white phantom drawing of the P-61; viewpoint is from 10 o'clock high.
- "There's more to it than meets the eye" features a color phantom drawing of the P-61; viewpoint is from 10 o'clock high.
- "Sir George Cayley's Strange Helicopter" features a color rendering and a drawing of the helicopter. It includes thumbnails of a P-61 and N-9M flying wing.