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

Though Roger Nash Baldwin served as the ACLU's executive director from 1920 to 1950, the Baldwin material in this subseries primarily documents his involvement with the ACLU after his retirement, spanning 1966-1978. The material found here includes correspondence and memos between Baldwin and the subsequent directors of the ACLU, biographical information, memoirs, interviews, and articles. Much of the biographical information and personal recollections of Baldwin were compiled to form a manuscript for a book on the early history of the ACLU which is also included within these files. Researchers interested in his work as executive director of the ACLU can refer to materials filed in the ACLU bound volumes and in the Roger N. Baldwin Papers (MC#005). Files documenting his work as International Civil Rights Work Advisor and his work on civil liberties in post-war Germany, Japan, and Korea can be found in the International Civil Liberties subseries.

The Patrick Murphy Malin material covers the years he was executive director of the ACLU (1950-1961). Included are correspondence, biographical information, speeches, memos, reports, statements, and printed material. The files are arranged alphabetically. Many of the files do not concern Malin directly, rather Malin correspondence can be found scattered throughout them.

The John de J. Pemberton (1963-1970) and Aryeh Neier (1970-1978) material includes articles, speeches, correspondence and memos arranged chronologically by year and alphabetically within each year covering various issues of concern to the ACLU. More Neier material is found in the next subseries.