Biographic Memoirs: Volume 74 contains the biographies of deceased members of the National Academy of Sciences and bibliographies of their published works. Each biographical essay was written by a member of the Academy familiar with the professional career of the deceased. For historical and bibliographical purposes, these volumes are worth returning to time and again. Table of ContentsFront MatterAlbert Francis BirchGregory BreitWarren Lee ButlerGeorge Brownlee Craig, Jr.Scott Ellsworth ForbushRoss GunnDavid HarkerYandell HendersonJames Lynn HoardJoseph KaplanStephen W. KufflerAnton LangSamuel Colville LindAlfred Otto Carl NierClair Cameron PattersonBerta V. ScharrerFrederick Emmons TermanVictor Chandler TwittyFrits Warmolt WentEugene Paul Wigner