Collection documents political activity among physicists during the Vietnam War era. Materials, including correspondence, petitions, newsletters, clippings, scrapbooks, flyers, and journals, relating to social issues and physics, and the organization of groups or subgroups to address issues such as employment in physics, the Cold War, the Vietnam War, the environment, nuclear weapons and nuclear disarmament. These groups within the American Physical Society include the Forum on Physics and Society, Subcommittee on Professional Concerns, Committee on Problems of Physics and Society. Important correspondents include Barry Casper, William Havens, Jay Orear, Martin Perl, and Edward Purcell.