This series contains Leser's institutional and organizational correspondence and documents his involvement with associations in the United States and worldwide, such as the African Studies Association, the American Anthropological Association, the American Association of Physical Anthropologists, the Deutsche Gesellschaft für Völkerkunde, The Royal Danish Academy of Sciences and Letters, the Society for the Scientific Study of Religion and the Wenner-Gren Foundation for Anthropological Research. Also included in this series is correspondence concerning travel arrangements and conferences, with publishers, churches and missionary groups, book dealers and museums, and correspondence with colleges and universities, including those where Leser taught: Black Mountain College, Olivet College, The New School for Social Research and the University of Hartford.