"The Masks of God: Primitive Mythology" by Joseph Campbell is a trade paperback published by Penguin Publishing Group in 1987. The book is part of the "Masks of God Ser." and explores the topics of folklore and mythology in a comprehensive and engaging manner. Illustrated and written in English, this book delves into the social science and religion genres, making it a valuable resource for those interested in the general study of mythology. With a weight of 16 oz and measuring 1 inch in both length and height, this paperback edition is a must-have for any bookshelf.