In 1890, the Kodaikanal Missionary Union (KMU) was formed to enable missionaries of the various denominations to come together for recreation and to develop a mission strategy and outreach in cooperation with each other. In 1923 it built an Edwardian style clubhouse with large central hall for social events and afternoon teas, six tennis courts, a reading room, and other spaces for meetings. With the decline of missionary activity in India, the KMU was wound up in the 1980s, and the property was turned over to Kodaikanal International School. The KMU library with many valuable old books besides newer materials, is still functioning in one room, and provides something of a social venue. The valuable original KMU archive materials have been incorporated into the archives of the school, which has hired an archivist and is in process of converting the whole original KMU building into an archive and display centre for the school and the community.