This series is comprised of a total of 296 titles (included, but not indvidually numbered: 28 duplicated copies and 2 periodical issues). Brochures, reviews, booklets, documents, maps, pamphlets and reprints that were titled in this series referred to 22 countries. They were written in 12 languages and some have several translations. The period covered in this series ranges between 1917 and 1946, with the majority relating to the 1910s and 1920s. Topics of the publications are peace movements and their worldwide historical development as well as the activities of peace associations and societies. They also include thoughts and opinions of various authors on the question of peace and war and on the concept of the united world and permanent peace which might be accomplished by a universally recognised code of international law or the voluntary establishment of an organization that went beyond the confines of national culture.
This series is comprised of 870 titles ranging in dates from 1912-1959 (with the majority of items dated in the 1920s-1940s). The material - brochures, pamphlets, scripts, leaflets, posters, flyers and newspaper clippings - concerns peace societies and peace work in 10 different countries and is written in 8 different languages. Some publications have several translations, including a few items in Esperanto. Duplicate copies are included and individually numbered. Plubcations illustrate the activities of international peace societies such as the Federal Council of Churches in America, National Peace Council, League of Free Nations Association, World Movement for World Federal Government, Society of Friends (Quakers), Carnegie Endowment for International Peace and League to Abolish War. This series also has extensive coverage on teh work of the National Council for Prevention of War.