The folders in Part 1 are arranged chronologically, except in series IV, XII, and XIV, which are arranged alphabetically. Arrangement of Part 2 varies, with most subseries in alphabetic sequence. Some of the subseries are arranged chronologically. Series I: Subseries B, which contains records of NLG national conventions, is an example of folders arranged by year. A number of subseries containing NLG v. AG court documents are also in date order. A few of the subseries, particularly those containing released government documents, reflect the order imposed by the FBI.
Part 1 is organized into 15 series and Part 2 is organized into 19 series. The first six contain material from the National Office and the New York City Chapter. The next seven involve the court case National Lawyers Guild v. Attorney General. Two series contain records from recent accretions, which are grouped roughly by creator or topic. The remaining series are grouped by format.
Part 1, Series I. Board of Directors (NYC Chapter) and Executive Board, 1937-1969
Part 1, Series II. Executive Officers, 1936-1968
Part 1, Series III. Statements, Resolutions, and Publicity Materials, 1937-1969
Part 1, Series IV. NLG Committees, 1937-1969
Part 1, Series V. Membership Records, 1938-1969
Part 1, Series VI. Chapter Records, 1937-1968
Part 1, Series VII. Convention Records, 1937-1968
Part 1, Series VIII. Publications, 1941-1967
Part 1, Series IX. Dinners, Events and Conferences, 1937-1978
Part 1, Series X. Political Issues, Including Government Investigations, 1942-1968
Part 1, Series XI. Legislation, 1936-1961
Part 1, Series XII. Cases: General Files, 1934-1967
Part 1, Series XIII. Correspondence, 1939-1969
Part 1, Series XIV. Subject Files, 1936-1976
Part 1, Series XV: Addendum, 1937-1968
Part 2, Series I. National Office Administrative and Organizational Records, 1931-2003
Part 2, Series II. National Office Programmatic Records, 1944-2001
Part 2, Series III. National Office Resource/Reference Material, 1949-1999
Part 2, Series IV. Publications and Press Materials, 1938-2004
Part 2, Series V. New York City Chapter Files - Administrative, 1937-2007
Part 2, Series VI. New York City Chapter Files - Programmatic, 1945-1985
Part 2, Series VII. NLG v. AG. Court Documents, Formal File, 1947-1990
Part 2, Series VIII. NLG v. AG. Discovery, 1921-1987
Part 2, Series IX. NLG v. AG. Reverse Discovery, 1937-1987
Part 2, Series X. NLG v. AG. Research, 1937-1988
Part 2, Series XI. NLG v. AG. Working Papers, 1936-1988
Part 2, Series XII. NLG v. AG. Administrative Material, 1937-1986
Part 2, Series XIII. NLG v. AG. Subject Files, 1930-1988
Part 2, Series XIV. 2014 Accretion, 1970s-1997
Part 2, Series XV. 2015 Accretion, 1960-2014
Part 2, Series XVI. Audiocassettes, 1981-1995
Part 2, Series XVII. Photographs, 1940s-1995
Part 2, Series XVIII. Archived Websites, 2007-ongoing
Part 2, Series XIX. Oral Histories