Although he is known primarily as a
cultural anthropologist, he did significant work in
archaeology and
anthropological linguistics, and he contributed to anthropology by making connections between archaeology and culture. He conducted excavations in
New Mexico,
Mexico, and
Peru. In Peru he helped found the
Institute for Andean Studies (IAS) with the Peruvian anthropologist
Julio C. Tello and other major scholars. Kroeber and his students did important work collecting cultural data on western tribes of
Native Americans. The work done in preserving information about Californian tribes appeared in
Handbook of the Indians of California (1925). In that book, Kroeber first described a pattern in Californian groups where a social unit was smaller and less hierarchically organized than a
tribe, which was elaborated upon in
The Patwin and their Neighbors His second wife,
Theodora Kracaw Kroeber, wrote a well-known biography of Ishi,
Ishi in Two Worlds. Kroeber's relationship with Ishi was the subject of a film,
The Last of His Tribe (1992), starring
Jon Voight as Kroeber and
Graham Greene as Ishi. Kroeber's textbook,
Anthropology (1923, 1948), was widely used for many years. In the late 1940s, it was one of ten books required as reading for all students during their first year at
Columbia University. His book,
Configurations of Cultural Growth (1944), had a lasting impact on social scientific research on
genius and
greatness; Kroeber believed that genius arose out of culture at particular times, rather than holding to "the great man" theory. Kroeber's childhood friend Carl Alsberg described him as a "good listener" and able "to be objective, to see the other point of view, to penetrate behind another person's behavior to his underlying thought [...] These traits indicate a sincerity and simplicity of character that primitive peoples sense at once and to which they respond by giving their confidence." From 1920 to 1923 Kroeber conducted an active practice as a lay psychoanalyst, with an office in San Francisco. ==Indian land claims==