In addition, it contains a foreword by anthropologist Walter Goldschmidt, who was a professor of anthropology at UCLA during the time the books were written, and an introduction by the author.
Кроме того, в него было включено предисловие антрополога Вальтера Гольдшмидта, который занимал пост профессора антропологии в UCLA в период, когда книга была написана.