If you have an interest in Indians soon enough you will discover the work of George Catlin. The caption for this image quotes Catlin at the Luce Foundation center for American art (where there are loads of Catlin) states:
Every one of these red sons of the forest (or rather of the prairie) is a knight and lord . . . the only things which he deems worthy of his exertions are to mount his snorting steed, with his bow and quiver slung, his arrow-shield upon his arm, and his long lance glistening in the war-parade . . .” George Catlin probably painted this work in his studio between 1835 and 1837.