Joannis Cornelis Verschueren (1905-1970) worked as a Roman Catholic missionary in southern Irian from 1931 until 1970. In the 1950s he wrote a number of papers on the Yéi. These papers, based on older field notes and a research trip through the area, are recapitulated in this volume. Verschueren provides genuine inside information and his data are new and authentic. The four papers in this vol…