Lucy, the Beginning of Mankind

From the back cover: "Lucy is a tiny lady three feet tall, 60 pounds light and 3.5 million years old. The oldest, most complete skeleton of any erect walking human ancestor ever found. Donald Johanson discovered her in Ethiopia in 1974 and set the world of anthropology on its ear. He and Maitland Edey tell you all about it with startling candor and irrepressible zest.