Yellow Wolf or He–Mene Mox Mox was a Nez Perce warrior who fought in the Nez Perce War of 1877. In his old age, he decided to give the war a Native American perspective. From their meeting in 1907 till his death in 1935, Yellow Wolf talked annually to Lucullus Virgil McWhorter, who wrote a book for him, Yellow Wolf: His Own Story. He is notable as one of the few members of the defeated Nez Perce to talk openly to strangers and tell their story to the world.

The Nez Perce War was an armed conflict in 1877 in the Western United States that pitted several bands of the Nez Perce tribe of Native Americans and their allies, a small band of the Palouse tribe led by Red Echo (Hahtalekin) and Bald Head, against the United States Army. Fought between June and October, the conflict stemmed from the refusal of several bands of the Nez Perce, dubbed "non-treaty Indians," to give up their ancestral lands in the Pacific Northwest and move to an Indian reservation in Idaho Territory. This forced removal was in violation of the 1855 Treaty of Walla Walla, which granted the tribe 7.5 million acres of their ancestral lands and the right to hunt and fish on lands ceded to the U.S. government.