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Photograph of the Northrop YB-49, a prototype jet-powered heavy bomber aircraft
ARP23A14_148

Photograph of the Northrop YB-49, a prototype jet-...

Photograph of a Northrop XP-56 Black Bullet, a prototype fighter interceptor built by the Northrop Corporation
ARP23A14_146

Photograph of a Northrop XP-56 Black Bullet, a pro...

Illustration depicting French street scene with early automobile
ARP23A10_430

Illustration depicting French street scene with ea...

James Watt's
ARP07103_460000769

James Watt's

Charles Babbage
ARP07099_390003477

Charles Babbage