The land tenure arrangements of missions in Latin America have received insufficient attention. Given the vast extent of land the missions controlled on the Latin American frontier and the effect that land tenure arrangements had on the functioning of the missions, this is a serious oversight. Rather than focus on land tenure, most studies of the missions have examined primarily issues such as evangelization, the labor regime, and demographic patterns. While these topics are also important, indeed vital, to an understanding of missions, an analysis of land tenure arrangements is a useful way for understanding the economic and even the political dimensions of mission systems. For example, the control that the missionaries imposed on their charges should have been reflected in a majority of the land controlled directly by the missionaries rather than holdings controlled by individual Indian families. In this sense, the land tenure system reflected the missionary regime in important ways and helps test hypotheses about economic resources as well as power within this controversial institution. In addition, the changes in ownership and use of land became a key ingredient in determining the survival of indigenous groups once the government secularized the missions.