Jack Dann is a science fiction writer and editor who was born in 1945 in Johnson City, New York, and now lives on a farm in Victoria, Australia. He is a multiple award winning author who has written or edited over 65 books, which have been translated into thirteen languages. His short stories have appeared in major magazines and anthologies including Omni, Asimov's F&SF, Penthouse, and Playboy. His historical fiction novel about Leonardo da Vinci, The Memory Cathedral, won the 1996 Australian Aurealis Award for Best Fantasy Novel and was number one on the Age bestseller list. His novella 'Da Vinci Rising', which integrates several sections of The Memory Cathedral with some new material, won… the 1996 Nebula Award, making him the first Australian resident to win this award. He has received the Australian Aurealis Award twice, the Ditmar Award three times, and the World Fantasy Award.
William Tenn, the pseudonym of Philip Klass, was born in London, England on May 9, 1920. He grew up in Brooklyn, New York and served as a combat engineer in the United States Army during World War II. After leaving the Army, he worked as a technical editor with an Air Force radar and radio laboratory and was employed by Bell Labs. He taught English and comparative literature at Penn State University for 24 years. He wrote academic articles, essays, one novel entitled Of Men and Monsters, and more than 60 short stories including Child's Play, Venus and the Seven Sexes, Down Among the Dead Men, The Liberation of Earth, Time in Advance, and On Venus, Have We Got a Rabbi. He received the Author… Emeritus honor by the Science Fiction and Fantasy Writers of America in 1999. He died of congestive heart failure on February 7, 2010 at the age of 89.