The Clan of the Cave Bear - first US edition
by Jean Auel - signed
First in the series of 4 books by Jean Auel about Ayla, the human who grows up in a prehistoric Neanderthal tribe. I knew the author from Tektronix, and also took a French class with her at Portland Community College.
Book is green boards with yellow spine, green letters stamped on spine; map-illustrated endpapers with tiny owner date; inscribed on title page to the previous owner with their stamp.