Ishi in Two Worlds is a biographical account of Ishi, the last known member of the Yahi Native American people. Written by American author Theodora Kroeber, it was first published in 1961. Ishi had been found alone and starving outside Oroville, California, in 1911. He was befriended by the anthropologists Alfred Louis Kroeber and Thomas Waterman, who took him to the Museum of Anthropology in San Francisco. There, he was studied by the anthropologists, before his death in 1916. Theodora Kroeber married Alfred Kroeber in 1926. Though she had never met Ishi, she decided to write a biography of him because her husband did not feel able to do so.
Ishi in Two Worlds was published in 1961, after Theodora Kroeber had spent two years studying the sources about him. It sold widely, remained in print for many years, and was translated into more than a dozen languages. The book was twice adapted into film, in 1978 (as Ishi: The Last of His Tribe) and 1992 (as The Last of His Tribe). It was highly praised by reviewers, who commended Kroeber's writing and her ability to evoke the Yahi culture. A 2013 biography of Theodora Kroeber wrote that she had a talent for "making us part of a life we never took part in",[1] while scholar James Clifford stated that the book "wrapped up Ishi's story in a humane, angry, lovely, bittersweet package."[2]