Fonds consists of personal and professional papers of physicist, Dr. Len Greenberg. Arranged in six series (Len Greenberg; Department of Physics and Astronomy; University of Regina; Professional Associations; Students; and Other Material), the records include general correspondence, Curriculum Vitae (1972), teaching materials, class evaluations, examinations, photographs, committee files, reports, pamphlets, and other records relating to Dr. Greenberg's activities as Professor of Physics and Astronomy at the University of Regina and its predecessor institutions.

This fonds contains material relating to Professor Kennedy's research and publications in the area of history of science (notably, on G.B. Airy, W. Brydone Jack, B.W. Currie, F.T. Davies and the Moon Hoax); astronomy (including information on comets and eclipses); as well as work he did on behalf of the Defence Research Medical Laboratories, the National Research Council, the New Brunswick Department of Agriculture and the NB Dep't of Health. There is also material relating to his career with the University of New Brunswick and the University of Saskatchewan, and information concerning his extensive collection of 16th - 19th century books on astronomy.