The Evangelical Alliance for the United States of America was a voluntary society for the promotion and manifestation of Christian unity, as well as the protection of religious liberty at home and abroad. Included in the collection are administrative records, correspondence, scrapbooks, and a photo album. Some records are in other languages such as German and French.

Henry Smith Leiper (1891-1975) was a Congregational minister, church official, and UTS student from 1914-1917. The collection contains materials related to Leiper's work against Nazism in Germany before, during, and after World War II, including correspondence, news clippings, and publications. The bulk of the records were created when Leiper was Secretary of the Federal Council of Churches (FCC).

Includes letters, minutes, reports, memoranda, articles related to Christian education and missions in Korea, China, Japan, and India, 1908-1939, and Germany and German missions, 1913-1922.