Who wrote the introduction to the book Cleaver wrote in 1968?
Maxwell Geismar Maxwell Geismar (August 1, 1909 – July 1979) was an American author who wrote the introduction to Eldridge Cleaver's "Soul on Ice". He signed the Triple Revolution statement sent to President Lyndon Johnson in 1964.
Ursula K. Le Guin Ursula Kroeber Le Guin ( ; born October 21, 1929) is an American author of novels, children's books, and short stories, mainly in the genres of fantasy and science fiction. She has also written poetry and essays. First published in the 1960s, her work has often depicted futuristic or imaginary alternative worlds in politics, the natural environment, gender, religion, sexuality and ethnography. In 2016, "The New York Times" described her as "America's greatest living science fiction writer", although she has said she would prefer to be known as an "American novelist".