This series contains congress progammes and congress reports, brochures, pamphlets, books and periodicals. The publications range in date from 1912 to 1955, although most of the documents date from the late 1920s and the 1930s. Most documents are written in English or French, some in German and very few in other languages. They deal with international youth organizations, national associations, internatinoal youth meetings, youth services and youth activities.