Biographical Memoirs is a series of essays containing the life histories and selected bibliographies of deceased members of the National Academy of Sciences. The series provides a record of the life and work of some of the most distinguished leaders in the sciences, as witnessed and interpreted by their colleagues and peers. They form a biographical history of science in America?an important part of our nation's contribution to the intellectual heritage of the world. Table of ContentsFront MatterHenry Herman BarschallPaul Doughty BartlettRichard Barry BernsteinNorris E. BradburyRichard Dagobert BrauerMelvin CalvinHallowell DavisCarl Barton HuffakerStephen Cole KleeneRobert B. LeightonJoseph Carl Robnett LickliderOtto E. NeugebauerEverett C. OlsonIsadore PerlmanRoger Randall Dougan RevelleBruno Benedetto RossiFrancis Otto SchmittJames Augustine ShannonCarl Richard SoderbergWilliam S. Vickrey