Includes correspondence, 1951-1979; reports, contracts, calculations, programs, publications and manuscripts relating to physics instruction and related experimentation; electricity and magnetism research; Los Alamos University lecture notes (1943-1946); Physics Department dinners, parties, and skits, 1940-1942, 1948-1969); electric delay line research, 1951-1956; Projects Quick Fix (1951-1953, 1958-1959) and Mink Refax (1958-1959) funded by U. S. Dept. of Defense to create tactical air control systems to provide ground control of weapons systmes (primarily aircraft) in combat, utilizing advanced radar and communications equipment; sabbatical research leave at the University of Bologna, 1957-1960; research on data processing in high energy physics, 1959-1962); letters of recommendation, 1964-1979) and physics publications, 1960-1965, 1969-1973. This series also includes correspondence, photographs, architectural plans for a house that Celia and Leo Lavatelli had designed by Harry Weese and had constructed in Aspen, Colorado, 1968-1970.