"Originally published in hardcover in the United States by Clarion, an imprint of Houghton Mifflin Harcourt Publishing Company, 1972." Originally published in hardcover in the United States by Clarion Books, an imprint of Houghton Mifflin Harcourt Publishing Company, 1995 Originally published in hardcover in the United States by Random House, New York, in 2010. "Originally published in hardcover in the United States by Alfred A. Knopf in 1967"--Copyright page. "Originally published in hardcover in the United States by Alfred A. Knopf in 1969"--Copyright page. Houghton Mifflin Books for Children is an imprint of Houghton Mifflin Harcourt Publishing Company "Originally published in hardcover in the United States by Alfred A. Knopf in 1970." Originally published in hardcover in the United States by Random House Children's Books, a division of Penguin Random House LLC, New York, in 2018. "Originally published in hardcover in the United States by Alfred A. Knopf in 1994." "Originally published in hardcover in the United States by Alfred A. Knopf ... in 2001"--T.p. verso