This is only the far left of a wide picture don by Bev Doolittle called "Two Indian Horses". The original is a wide print of many horses in a row resting with a Second Calvary soldier walking off in the other direction. (Pinned above) My all time favorite of her work. Brilliant artist!
'Woodland Encounter' painting by Bev Doolittle; you will need to enlarge this to see the Native Americans on pinto horses camouflaged in the birch trees