"Three Sioux Scouts" by Elmer Russell Gregor is a historical novel written in the early 20th century. The story follows three young Sioux warriors—White Otter, Sun Bird, and Little Raven—who venture out on the Great Plains in search of buffaloes but become embroiled in the tensions between their people and the Kiowas. Through chase and clever maneuvers, the three scouts aim to warn their allies, the Cheyennes, of impending danger from a Kiowa war party. The opening of the book introduces White Otter and his two companions as they embark on a buffalo hunt, only to notice signs of potential danger nearby, including the suspicious behavior of local wildlife and the presence of mysterious riders. As they cautiously decide to investigate further rather than retreat, they realize they may have stumbled into a situation far more perilous than they anticipated. Their bravery and tactical thinking set the stage for a thrilling adventure as they navigate the complexities of tribal warfare and alliances while aiming to protect their loved ones from harm. (This is an automatically generated summary.)