This series contains the correspondence of Charles Tudor Leber while on tour representing the Board of Foreign Missions of the Presbyterian Church from 1944-1945 and again in 1953. Leber's letters describe the countries, people, and social and economic environments he traversed, and illustrate the nature of travel and the work of missionaries in the mid-20th century. Locations visited include Japan, Pakistan, Taiwan, Thailand, Spain, Korea, Indonesia, India, Germany, Mexico, Guatemala, Colombia, Ecuador, Peru, Bolivia, Chile, Argentina, Brazil, Venezuela, the Philippines, Hong Kong, and Singapore.