Rank 5 centres Luna 16 — the Lavochkin drill lander Georgi Babakin's team delivered to Mare Fecunditatis in September 1970, completing the first uncrewed sample return from the Moon. The Proton-K launched a bus with vertical drill assembly, ascent stage, and Earth-return capsule that collected 101 g of regolith and lofted it back to Soviet soil while Apollo 11 memorabilia still dominated Western headlines. Robotic sample return validated an engineering pathway independent of crewed landing timelines — a capability NASA would not replicate robotically until later decades. Constructivist linocut renders the drill-tower lander hero, Proton-K ascent silhouette, mustard geometric accent, and dense cream archive panel exactly as the master PNG dictates.