The James Welch Native Lit Festival https://www.jameswelchfestival.org/ July 28-30 in Missoula.
The Missoulian has an article as well, https://missoulian.com/entertainment/arts-and-theatre/james-welch-festival-to-bring-indigenous-writers-to-missoula/article_628407f8-0a73-56ef-8737-d8e081e401fd.html