æt ðə tˈaɪm ʌv hɪz dˈɛθ, hiː hɐdbɪn wˈɜːkɪŋ wɪð ˈɜːvən də vˈoːɹ ˌɔn ɐ nˈuː bˈʊk, ðə hjˈuːmən ɛkspˈiəɹɪəns: ɐ tˈɛkstbʊk ʌv ˌænθɹəpˈɑːlədʒi.
At the time of his death, he had been working with Irven DeVore on a new book, The Human Experience: A Textbook of Anthropology.