Stage III Away!

Foreshadowing the R-7, Mercury and Apollo, Bonestell's multi-stage rocket "Third Stage" begins its burn after the second stage achieves brennschluss, Willy Ley's German word for 'burnout' in "The Conquest of Space" (reason being the connotation of "burnout" in English is different, not to mention after the 60s).

The original Bonestell was done for the March 22, 1952 issue of Collier's.