Calvin Roesler and his wife Ruth spent 43 years (1955-1998) as missionaries in Papua, formerly Irian Jaya, Indonesia. Their work was among the Asmat people in the swamps of the south coast. Linguistic work of devising a spelling system and translation of Scripture was carried out. This included gathering of anthropological data about the culture. Calvin died (in Darwin Australia where they were medivaced) just at the close of their work. Ruth continued the work and is preparing a lexicon of Asmat.