Subject files comprised of correspondence, reports, minutes, memoranda, and printed material concerning various aspects of YMCA work abroad, especially financial issues, boys' work, and war work.

Ccorrespondence, minutes, reports, financial documents, pamphlets, maps, journal and newspaper articles and other records documenting YMCA work in France, especially youth and publishing work done in France for Russian refugees.

Correspondence, minutes, reports, financial documents, development plans, maps, pamphlets, journal and newspaper articles and other records of YMCA international work, both civilian and war-related, in Greece, primarily in Athens and Thessaloniki (also referred to as Salonica and Saloniki), as well as camps in Salamis, Pelion and Chalkidiki .

Correspondence, minutes, reports, financial documents, pamphlets, maps, journal and newspaper articles and other records of North American YMCA international work in Italy, primarily in Rome.

Correspondence, minutes, reports, financial documents, pamphlets, building plans, journal and newspaper articles and other records of the YMCA movement in Albania, Armenia, South Asia, Bangladesh, Belgium, Cambodia, Denmark, Fiji, Finland, Gaza, Guam, Iran, Ireland, Laos, Lithuania, Mariana Islands, Micronesia, Middle East, Moluccas, Norway, Papua New Guinea, Saipan, Samoa, Western Samoa, Saudi Arabia, Scandinavia, Slovakia, Sweden, Syria, Tahiti, and Truk.

Correspondence, minutes, reports, financial documents, music books, pamphlets, maps, photographs, journal and newspaper articles and other records of the YMCA movement in Poland, mostly focusing on the work of Paul Super on building projects and the state of Poland and Polish groups in exile after both German and Soviet occupation.

Correspondence, reports, statistics, newspaper and journal articles, pamphlets, building details, images and handbooks; primarily concerning the development of YMCAs in San Juan, Puerto Rico and the surrounding area, mainily focusing on building development in San Juan, Ponce, and Mayaguez.

Correspondence, minutes, reports, financial documents, pamphlets, journal and newspaper articles and other records of North American YMCA international work in Romania, primarily related to relief work that the YMCA did there throughout both World War I and World War II.

Correspondence, reports, financial documents, pamphlets and other records of North American YMCA international work Yugoslavia, primarily of Donald A. Lowrie's efforts in the area of student work in Belgrade