Includes: documents concerning the history of physics and astronomy in USSR; protocols of colloquiums: on physical chemistry and on molecular physics; protocols of sessions, plans, financial accounts of Physical Department of the Section, 1928; also similar documentation for the Association, 1930-1931; also for the Section for Astronomy and Geodesy of the Association, 1931; protocols of sessions, plans, reports, correspondence and abstracts of lectures of the Circle of Mathematicians and Physicists-materialists, 1928-1930; shorthand reports of the organizing meeting, the members lists and protocols of meetings of the Society of Physicists-materialists, 1931, working plan of the Society for 1932; various materials (programs, lists of learners, correspondence) concerning the creation and the activity of the Courses for teachers of physics attached to the Communist Academy; documentation of the expert commission of the Mathematical Section concerning scientific value of K. V. Brodovskii's conclusions in regard to "internal contradictions of relativity theory," his open letter to A. Einstein, 1930; conclusions made on examining the activity of the Institute for Physics and Biophysics (Institut fiziki i biofiziki) and Thermoengineering Institute (Tepoltekhnicheskii institut), 1931; shorhand reports on addresses: A. Ya. Khinchin, "The Teaching of Mazes about Probability and Principles of Physical Statistics," 1929; A. I. Variash, "The Causality Principle in Physics, 1930; E. Kol'man, "Contemporary Tasks Facing Mathematicians and Physicists Who Are Materialists-dialecticians," 1930; A. O. Apirin, "On Criticism of Existing Manuals of Physics," 1931; A. F. Ioffe, "Physics in the Period of Reconstruction," 1930; F. Zyberev, "Ferma's Great Theorem as One of the Most Important Physical Problems" (undated).