"Grace Harlowe's Overland Riders in the High Sierras" is a book written by Jessie Graham Flower. This work is part of the "Grace Harlowe Overland Riders" series, a series of adventure novels for young readers. The series follows the adventures of Grace Harlowe and her friends as they embark on various journeys and face challenges. In "Overland Riders in the High Sierras," the characters likely find themselves in the rugged and picturesque landscapes of the High Sierra region, encountering adventures, mysteries, and forging friendships along the way. Jessie Graham Flower, who wrote under the pseudonym Josephine Chase, authored several series for young readers, and the "Grace Harlowe Overland Riders" series was one of her contributions to juvenile literature. For readers interested in early 20th-century juvenile adventure literature, especially stories featuring strong and independent female characters, this book and the broader series may be an enjoyable exploration of friendship and adventure in the American West.