Correspondence, minutes of meetings, financial records, publications, notes, subject files, awards, speeches, reports and audiovisual materials document work by the Church Peace Union, its successors Council on Religion in International Affairs and Council on Ethics and International Affairs, and related organizations such as the World Alliance for International Friendship Through the Churches. The first installment of the CCEIA archival materials came to the RBML in 1974, with numerous additions over the years. A major addition in 1982 contained primarily the records of the Board of Directors and their semi-annual meetings, as well as the various programs and institutes of the Council, for the years 1972-1982, along with selected 1930s materials. 1986 addition contains presidential correspondence files, minutes of the Board of Trustees and committees, special projects, programs and conferences files, and the business and editorial files of "Worldview". Correspondents include John Foster Dulles, Jane Addams, Fiorello La Guardia, and Paul Tillich. 1990 and 2000 additions includes files of CCEIA presidents and vice presidents, paper and audiovisual materials on Merrill House Conversation Programs; Educational programs; International Monetary Fund/Lecture series; The Annals Of The Academy Of Political & Social Science; Washington Consultations; Colloquia for the Clergy; Church State Project; Asian Development & The Carribean Initiative; Korea: Year 2000 Project; fundraising files, printed materials and files of the Department of Publications.

Newspaper clippings relating to the career, life, activities, and political milieu of Chester A. Arthur, compiled for him while he was president, and covering only the period of his presidency. The clippings are mounted in 76 volumes and were gathered from both the major New York papers had local and specialized journals from all over the country. The volumes are grouped in several sequences as follows: 45 volumes labelled "Current Comment" 1881-1885; 6 volumes "Presidential Predictions, 1883-1884; 7 volumes "Canal and foreign questions" 1881-1885; 2 volumes "Personal" 1882-1883; 3 volumes "Appointments" 1882-1885; 3 volumes "Conventions" 1881-1884; 2 volumes "Civil Service" 1881-1885; 2 volumes "Mormonism" 1881-1885; 2 volumes "Southern" 1881-1884; 1 volume "Financial and Statistical" 1881-1885; 1 volume "Tariff discussions" 1884-1885; 1 volume "Social" 1884-1885; 1 volume "Miscellaneous notes" 1884-1885.

Correspondence, minutes, reports, documents, scrapbooks, publications, memorabilia, and photographs. The general files, minutes, and reports reflect the varied activities and interests of the League, including apportionment, court reform, education, and voting rights. The historical files contain photographs, printed materials, and memorabilia, filed chronologically. Also included are the periodicals and publications of the League, scrapbooks arranged chronologically, and "Mailbooks", or volumes of mimeographed reports and announcements which were sent to branches and board members. Among the major correspondentrs are: Thomas E. Dewey, Herbert H. Hehman, Nelson A. Rockefeller, Franklin D. Roosevelt, and Alfred Smith

Correspondence, memoranda, minutes, reports, scrapbooks, printed material, and photographs. The files contain much material of the League of Women Voters of New York State as well, and some material pertaining to the national organization. The files document the League's activities in the areas of voter registration, election reform, New York City government, foreign policy, ecology, and numerous other concerns, and contain the records of city, state, and national conventions, annual reports, and Board and Council minutes. Major correspondents include Emanuel Teller, Stanley M. Isaacs, Jacob K. Javits, Robert F. Kennedy, Edward I. Koch, John Vliet Lindsay, Nelson A. Rockefeller, Anna Lord Strauss, and Percy E. Sutton.

The collection includes seven volumes of scrapbooks containing clippings on current affairs roughly between 1939 and 1950 with particular reference to the trials of the German War Criminals at Nuremberg and the state of Germany after World War II. Also, general items on President Franklin Roosevelt and U.S. foreign policy. There are several complete copies of newspapers folded and inserted in the scrapbooks. The second and more important part of the collection consists of typescripts of Dr. Pfeiffenberger's writings. These occupy one and one-half manuscript boxes (Boxes 4 and 5). Included are about 45 pages of poetry in German, about 120 pages of selected stories of New York Life (in German), about 30 pages on The European State-System, 1848-1890 (in German), 127 pages of manuscript entitled "The Spirit of the Code of Hammurabi" (this is a preliminary draft in English of a short book or article by Pfeiffenberger), about 305 pages of typescript on "Compensation in the Western Zone of Germany" by Pfeiffenberger, Dr. H. Klein, and Dr. Klavehn-Berndt (there are many changes and notes in script, and this item is accompanied by another typescript of approximately the same size on the same subject), and several other items.

Papers of Shepherd, including correspondence with professional colleagues at home and abroad, U.S. government officials, and Latin American government officials dealing with his own publications, his trip to Austria in 1932, and his interest in Latin American affairs, the Institute of Latin American Affairs, the INTER-AMERICAN HISTORICAL SERIES, Latin American area studies, oriental area studies, and the NEW ORIENT SOCIETY. The manuscripts include three boxes of lecture notes on American history in English and German; abstracts and related material of his lecture tour in England, 1922; typescript instructions for his HISTORICAL ATLAS, including maps, related correspondence, and documents; notes, bibliographies, essays, photographs, and related materials on Latin America; a scrapbook of clippings on the Williamstown Institute, 1927; his English literature notebook while an undergraduate at Columbia College, 1893; two boxes and a scrapbook of travel photographs and lantern slides of views from around the world; Shepherd family items include a hand-drawn, hand-colored coat of arms and a letter book of his father, William Shepherd, dated 1867-1871; and Iona Shepherd's 1905 autograph book.