Introduction / Phillip R. Sloan and Brandon Fogel -- Historical origins of the Three-Man Paper -- Physics and genes: from Einstein to Delbrück / William C. Summers -- Biophysics in Berlin: the Delbrück club / Phillip R. Sloan -- Exhuming the Three-Man Paper: target-theoretical research in the 1930s and 1940s / Richard H. Beyler -- Philosophical perspectives on the Three-Man Paper -- Niels Bohr and Max Delbrück: balancing autonomy and reductionism in biology / Nils Roll-Hansen -- Was Delbrück a reductionist? / Daniel J. McKaughan -- The Three-Man Paper -- Translator's preface / Brandon Fogel -- The text of the Three-Man Paper / translated by Brandon Fogel -- References in the Three-Man Paper / prepared by James Barham