About Sylvia Engdahl
Sylvia Louise Engdahl is an American writer, known best for science fiction. Her debut novel Enchantress from the Stars, published by Atheneum Books in 1970, was the 1971 Newbery Honor Book, was a Geffen Award finalist in 2008, Best Translated YA Book, and she won the Phoenix Award for that work twenty years later.
Biography source:
Wikipedia
