The 23 boxes of this series relate to the period in which SDS became increasingly militant and violence-oriented, and finally dissolved into factionalisn. These papers are organized into files of correspondence; national committees, conventions, and council meetings; National Office matters; special project and subjects; related groups; and miscellany. Much of the correspondence is from 1965 and relates to Paul Booth. A sizeable portion of the later correspondence relates to Bernardine Dohrn, who also apparently organized some of the project-subject files.

The national committees, conventions, and councils files, 1965-1968, contain correspondence, minutes, notes, and resolutions. There is a wide range in the extent to which meetings are documented, with some having ample records and others none at all.

The locality files, 1964-1970, contain letters, clippings, publications, leaflets, and reports; these often pertain to local controversies involving anti-war protests and civil liberties. Many files include applications for affiliation and chapter constitutions and reports, and some include assessments by the National Office as to their level of activity circa 1966.

The office files, 1965-1969, contain rosters of persons arrested during the Days of Rage, October 8-11, 1969. These trace the progress of court cases and list when and where persons were arrested. A card file contains names of contacts and chapters in states alphabetically between Massachusetts and Wyoming. Financial records include miscellaneous bank statements, check stubs, and budgets. The cash receipts journal records the names of persons contributing to SDS and the amounts received from them.

The project-subject file, 1964-1970, includes a wide range of material: correspondence, leaflets, clippings, manuscripts, reports, and miscellany. The manuscripts include “The Birth of a Movement: SDS from 1960 to 1965” by C. Clark Kissinger as well as many other articles on SDS and related subjects. One should note that correspondence and manuscripts concerning New Left Notes, SDS Bulletin, and Vietnam Bulletin are all located in the project-subject file. Materials on the National Lawyers' Guild and on women appear to have been collected by Bernardine Dohrn.

The reference files include draft counselling information; material on chemical and biological warfare; on the rights and treatment of political dissidents in the U.S.; and files on political and student activity in various nations and areas throughout the world. The related groups files, 1965-1969, have correspondence, leaflets, pamphlets, newsletters, and clippings. The miscellany includes unidentified notes, unrelated leaflets, photos of an unknown GI's diary as well as numerous leaflets and pamphlets produced by SDS.