The papers consist of correspondence, writings, subject files, memorabilia, photographs, financial records, and other papers detailing the professional career and personal life of Anson Phelps Stokes and family members, including Olivia, Caroline and Helen Stokes. Papers relating to Anson Phelps Stokes document his work with prominent educators, reformers, religious leaders, businessmen, and politicians. Stokes's work on behalf of black education, social issues, and the Phelps-Stokes Fund are detailed. His religious activities, Yale University work, and family interests are also represented, as are Stokes's work on behalf of the Portsmouth Treaty of 1905 and the Yale-China Association. Papers relating to Helen Phelps Stokes include material relating to the Socialist Party and the National Civil Liberties Bureau.