The Board Committee files (42 linear feet) contain minutes, correspondence, and occasionally committee rosters. The Board Committees themselves fall into two categories: Standing Committees and Special Committees. Standing committees meet regularly to discuss broad topics in civil liberties (Academic Freedom Committee, Church and State Committee, etc.), while special committees are created to deal with some specific incident related to a civil liberties concern or the workings of the board or committee themselves. The records are arranged chronologically with standing committees in alphabetical order within each year followed by the special committees. The researcher should note that committee names often change, and that committees are created or disbanded over time.

The National Committee was originally organized by Roger Baldwin who invited prominent citizens to become members. Its main function was to discuss the ACLU's position in relation to certain debatable public issues, and to discuss problems suggested by the affiliated branches regarding the internal relationships within the ACLU. In 1970 the National Committee changed its name to the National Advisory Council, though it maintained the same functions as the National Committee.

The Executive Directors subseries (2.94 linear feet) includes material from Roger Baldwin, Patrick Murphy Malin, John de J. Pemberton, Jr. and Ayreh Neier.

Alan Reitman began working for the ACLU in 1948 as publicity director, then later served as assistant director, 1951-1957, and associate director, 1957-1990. The first five boxes (2.1 linear feet) contain correspondence, memoranda, reports, and statements covering the years 1948-1986 and document Reitman's role in ACLU operations. The subseries is arranged chronologically by year and alphabetically by subject within each year.

The Dorothy Dunbar Bromley subseries (5.88 linear feet) documents her tenure as assistant director of the American Civil Liberties Union. The materials are divided into three groupings: Academic Freedom, Church and State, and Radio/TV.

These records (2.94 linear feet) document the activities of assistant director Jeffrey Fuller who promoted the creation of ACLU state affiliates. Organized alphabetically by state and by chapter within each state, the records consist of correspondence, memoranda, printed materials, and financial records. The researcher will also want to consult the affiliates and state correspondents subseries.