All federally recognized tribes and the tribal leaders are listed at the end of the video. In the 1930's the government created the National archives and they keep all permanent records. In 1887 all native americans had to register with the government. Unfortunately, many did not, some many left the reservations, many changed their names. That is why it is so hard to trace your heritage.
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Or, contact any native american dealer that sells books and videos. Cherokee Genealogy - selected resource list. Cherokee Genealogy Page - starting point for those tracing their Cherokee roots. Native American Census Indexes - from various parts of the country. Native American Heritage - offers research sources for tracing tribal genealogy.