Only Earth and Sky Last Forever by Nathaniel Benchley , 1st Scholastic paperback printing, TK2456, 1973, 207 pages.
DESCRIPTION:“How can he ever hope to do enough brave deeds to win the girl he loves? The Indian Agency has taught him about hunger and humiliation and the white man’s broken promises. But it has taught him nothing about being a mighty warrior.
Dark Elk is green as green when he joins Crazy Horse to fight the white soldiers who are trying to take over Indian country. He has to learn all the strategems of battle. At Little Big Horn he learns, finally, the hardest lesson of all… “(from the back cover)