These papers document the work of Gerald H. Anderson, who was a missionary educator, college president, and Director of the Overseas Ministries Study Center from 1974 to 2000. Anderson's extensive writings, lectures, and conference activities provide a valuable overview of the ecumenical mission scene during the second half of the twentieth century. A substantial portion of the collection relates to Anderson's work as editor of the Biographical Dictionary of Christian Missions. These records include drafts and materials not included in the final publication as well as correspondence with the contributors. Other areas of research interest for Anderson included Christianity in the Philippines, Jewish-Christian relations, and the history of the International Association for Mission Studies.