An Arapahoe Boy by George de Forest Brush https://www.nga.gov/artworks/133512-arapahoe-boy
In 1882, after nearly six years of rigorous academic training in the studio of Jean-Léon Gérôme and at the École des Beaux-Arts in Paris, George de Forest Brush traveled to Wyoming, where he spent several months among the Arapahoe and Shoshone, completing a number of detailed studies of the people he met. Later that year, he journeyed north, where he spent at least eight additional months among the Crow in Montana.
the following decade Brush produced a remarkable series of paintings of American Indians