It called for the termination of federal supervision over the trust and restricted property of numerous Native American bands and small tribes, all located west of the Cascade Mountains in Oregon.
The Western Oregon Indian Termination Act was unique because of the number of tribes it affected.
A review of the 1890[2] and 1930 censuses shows that several of the named tribes in the termination act reported no members.
[5] On April 14, 1956, the Federal Register published the final roll of the Confederated Tribes of Grand Ronde which contained 862 names.
[6] The combined total of these two confederations' population was 1,791, though there may well have been scattered native peoples in the coastal region who were not affiliated with these reservations.