A major feature of research in African history is the reliance of African historians on oral statements for much of their evidence. Vansina's pathbreaking explorations of African oral traditions and testimonies established criteria for the collection of oral evidence and ushered in the contemporary era of scholarship in African history. Although the publication ofOral Traditionsanctioned the use of oral data, it also prompted considerable reflection about the nature, strengths, and weaknesses of oral evidence. For the most part this scholarly examination of African oral traditions and testimonies has focused on their value as sources. What has not been fully addressed are the social and cultural dynamics of the research process itself: how the interaction between a foreign fieldworker and an indigenous informant involves not only the production of knowledge but the management of asymmetrical power relationships as well. Rarely do researcher and informant interact as equal partners. During the process of fieldwork, sometimes the researcher is favored, sometimes the informant. This brief paper is a reflection on the ways the attitudes of an African people about knowledge, power, and outsiders influence the kind of oral evidence the researcher collects.For much of the past two years I resided in a village in northern Ghana where I was conducting fieldwork among the Mamprusi people. I was seeking information which would embellish and provide an indigenous texture to the archival sources I had collected earlier as part of my efforts to reconstruct the social history of Mampurugu during the colonial period. It soon became apparent, however, that my quest for an indigenous expression of, and perspective on, historical process was mired in a complex host of conflicts and assumptions. As a white stranger in the Mamprusis' midst asking as many questions as I could about the Mamprusi past, I received answers which reflected not only the degree to which I had successfully or unsuccessfully established cordial and trusting relationships with my Mamprusi informants, but also Mamprusi attitudes about historical knowledge and their anxieties in regard to possible consequences if such knowledge were revealed to non-Mamprusi.