Plains Indian Mythology by Carol Rachlin and Alice Marriot is a trade paperback book published by Penguin Publishing Group in 1977. The book explores the myths, legends, and folktales of the Plains Indian tribes, providing insights into their cultural beliefs and traditions. With a focus on social science and fiction, the authors present a collection of stories that offer a glimpse into the rich folklore of Native American communities. This 192-page book serves as a valuable resource for those interested in ethnic studies and the mythology of the Plains Indian tribes.