The Ely Shoshone Indian Reservation is an Indian reservation for the Ely Shoshone Tribe of Nevada, Shoshone people, in and near the south side of the city of Ely in south-central White Pine County, Nevada. In 2005 it had a population of around 500, a textile business, and its own court system. The reservation is quite small, with a land area of only 104.99 acres (0.4249 kmē) and a 2000 census official resident population of 133 persons. Part of the city of Ely lies within its territory.
source: Wikipedia
The Flag
From a photo, the flag appears to be light green with their seal and some feathers. Details of the seal may be seen
here,
here,
here and
here. Ben Cahoon, 28 August 2017