Consists primarily of correspondence and photographs. Included are papers relating to John Insley Blair, the 19th-century American railroad capitalist and father-in-law of the firm's founder, as well as other Blair family members.

These records represent a broad range of the ACLU's activities in the twentieth century.

These records represent a broad range of the ACLU's activities in the late twentieth century.

These records represent a broad range of the ACLU's activities in the late twentieth and early twenty-first century. In particular, this series documents the ACLU's Immigrants' Rights Project; Lesbian, Gay, Bisexual, Transgender and AIDS Project; National Prison Project; Racial Justice Program; Reproductive Freedom Project; and Women's Rights Project. To a lesser extent, this series includes ACLU publications and administrative records from the offices of the Executive Director and Director of Communications.