Northrop ATF

Advanced Tactical Fighter at Wikipedia

Image credit: Northrop

Image source: National Archives

Booster Recovery

Saturn V at Astronautix

Image credit: Ryan Aeronautical

Image source: SDASM Archives

Valkyrie by John Gorsuch

North American XB-70 Valkyrie at Wikipedia

Image credit: North American Aviation

Image source(s):

Apollo4Ever

Drew Granston