There are two Pulitzer Prizes in circulation. One is awarded by the board of directors of The Pulitzer Prize, Inc., and the other by the president of the United States. Updike received two Nobel prizes, one in literature and one in history, and several other awards. He was also a member of the American Academy of Arts and Letters and the National Institute of Arts and Letters. He published four novels and three collections of short stories in the English language. His novel Rabbit Angstroms: A Novel with Animations is considered by some to be his masterpiece. It won the 1975 Newbery Medal for best novel for children and the 1976 Carnegie Medal for outstanding book for a young person. It was followed by two more novels in the Rabbit Angstrom series. Updike wrote two other bestselling novels that were not written by Rabbit Angstrom. They are Centaur: A Comedy of Visions and Beowulf: A Translation from the Icelandic. Centaur received the 1969 National Book Award for Fiction. It was followed by another successful novel, Rabbit Redux, which was released in 1979.