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Show me your CDIB

Discourse concerning the legitimacy of claims of Indian identity characterize much of the debate in Indian country today. Any legitimate claim to an Indian identity rests, in part, on tribal membership, which requires certification by the U.S. government in the form of a Certified Degree of Indian Blood (CDIB) and a tribal membership identification. Once a person establishes biological heritage with the CDIB, the blood quantum—full, 1/2, 1/256, and so forth—often is taken as a rough measure of “Indianness.” This emphasis on blood quantum has been an important feature of both Indian and Tribal identity in Oklahoma throughout the 20th century. Using data from interviews with Oklahoma Indian people taken in the 1930s, 1960s, and gathered in the field from 1994 on, this report will look at the meaning and importance of blood quantum in Indian identity and how that has been expressed by Indian women and men throughout the past 100 years.