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.