1969 Apollo — 2 museum-grade prints that set the mood. Apollo 9 answered the question Apollo 8 had deferred — could the Lunar Module operate as an independent spacecraft? Spider's flight demonstrated that the awkward gold-foil lander could separate from Gumdrop, fire its descent engine, and rendezvous again — the exact sequence Apollo 11 would need in lunar orbit. Apollo 10 was the mission that made Apollo 11 possible — every critical sequence from lunar orbit insertion through LM separation, descent, ascent, and rendezvous was exercised over the Moon except the final landing burn. Stafford and Cernan reported the lunar surface up close; Young held Charlie Brown in orbit.