The Luis W. Alvarez papers include correspondence, research files, diaries, reports, and notes documenting Professor Alvarez's accomplishments as a professor in the Department of Physics at the University of California, Berkeley, and as a research associate at the Lawrence Berkeley National Laboratory. Projects documented include Alvarez's work as a member of the Manhattan Project, his studies of hyperon events in balloon-flown emulsions, his contributions to the Pyramid Project, and his research on bubble chambers. The collection also includes the draft for Alvarez's autobiography, Alvarez: Adventures of a Physicist.