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Featured in the guided tours. On the left is the back-illuminated box containing a stack of transparent sheets with contours that I donated to the Museum. The contours depict the first molecule that was reconstructed in 3D using the single-particle technique. The year is 1986. In particular, the random-conical tilt method was used to obtain the angle assignments. On the right is the apparatus used by Jacques Dubochet in 1981 to plunge an EM grid into liquid ethane, immersed in a bath of liquid nitrogen. (Richard Henderson’s display – the atomic model of bacteriorhodopsin obtained by cryo-EM, is not visible in this picture.)