SPECIAL THANKS are owed to my assistant, Nancy Wilson, for her help with much of the research; to my agent, Ellen Levine, whose support and friendship have sustained me for, lo, these many years; and to my editor and friend, Dan Halpern, whose tact, intelligence, and trust guided me throughout the writing of this book.
Also, heartfelt thanks to Bela Amarasekaran of the Tacagama Chimpanzee Sanctuary, Freetown, Sierra Leone; Sally Boysen at Ohio State University, Columbus, Ohio; Gloria Grow of the Fauna Foundation, Chambly, Quebec; and the many other individuals around the world who have dedicated their lives to saving chimpanzees from medical experimentation, abuse as entertainers and pets, and outright extermination.