Themes: Biography, Native Americans, Movements. Wilma Mankiller knew firsthand the hardships facing the Cherokee people in the mid-20th century. After growing up in poverty, she got involved in the Native American rights movement of the 1960s and resolved to fight for change. As the first female principal chief of the Cherokee Nation, her hard work and determination improved health care, education, and living conditions for her tribe. Mankiller's legacy of compassion and dedication continues to inspire people in the American Indian community and beyond. Blue Delta Books™, a Hi-Lo Books™ biography series, tell the stories of people who have changed our world in profound ways. This series features a diverse group of people. Some are more well-known than others, but all deserve to be highlighted for the positive impact they have had. Each Blue Delta Book features full-color images on every page and tells the person's story from childhood throughout their life. These books are sure to inspire young teen readers. Each book is 48 pages long.