Subgroup I: These records include the council minutes of both General Sessions and Executive Council meetings of the American Physical Society (APS) (1899-1988), with some summaries; of particular interest are lists of nominations, newly elected members, elected honorary members, resignations, and deaths of members . Also includes early copies of the Bulletin of the American Physical Society (1899-1902), programs of meetings, membership lists, and some published proceedings. Also includes selected ledgers (seven items, 1919-1956); seven scrapbooks (1916-1962, 1967-1969) containing program announcements, ballots, and membership forms; audiovisual material from the 1978 annual meeting; and photocopies of published presidential addresses from 1899. Correspondents include W. W. Havens (executive secretary), S. A. Goudsmit (editor-in-chief), and J. A. Burton (treasurer). Also material from many APS committees including: the character of APS Meetings (1960s), awards, education, (1970s), minorities (1970s and 1980s), nominations (1958-1985), professional concerns (1970s), program (1960s-1980s), publications (1960s and 1970s), Congressional Fellowship (1970s), and women in physics (1970s). Subjects covered in files include: Soviet physicists, International Union of Pure and Applied Physics (IUPAP) (1971-1985), the Directed Energy Weapons (DEW) Study, Committee of Scientific Society Presidents (1975-1983), National Research Council (1966-1986), Visiting Physicists Program (1974-1980), and the American Institute of Physics (1958-1982).

Subgroup II: Proceedings; bulletins; presidential addresses; correspondence; ledgers; scrapbooks; committee minutes; nominations and elections; awards; subject files. Records include the council minutes of the Society (1899-1988), with some summaries, and early copies of the Bulletins (1899-1902) which contain constitutions and bylaws, programs of meetings, membership lists, and some published proceedings. Also includes selected ledgers (seven items, 1919-1956); seven scrapbooks (1916-1962, 1967-1969) containing program announcements, ballots, and membership forms; audiovisual material from the 1978 annual meeting; and photocopies of published presidential addresses from 1899. The 1993 addition to the APS records includes Executive Committee and Council correspondence (ca. 1961-1981); correspondents include W. W. Havens (executive secretary), S. A. Goudsmit (editor-in-chief), and J. A. Burton (treasurer). Also material from many APS committees including: the character of APS Meetings (1960s), awards, education, (1970s), minorities (1970s and 1980s), nominations (1958-1985), professional concerns (1970s), program (1960s-1980s), publications (1960s and 1970s), Congressional Fellowship (1970s), and women in physics (1970s). Subjects covered in files include: Soviet physicists, International Union of Pure and Applied Physics (IUPAP) (1971-1985), Committee of Scientific Society Presidents (1975-1983), National Research Council (1966-1986), Visiting Physicists Program (1974-1980), and the American Institute of Physics (1958-1982).