Author: Sylvia Engdahl
Alternate names: Sylvia Engdahl (On all paperback and UK editions); Sylvia Louise Engdahl (on some hardcover editions of Young Adult novels only); Sylvia Engdahl; Sylvia Louise Engdahl
Born: 1933
Bio: See bio under Sylvia Engdahl. (Her middle name was used only on some hardcover editions of her Young Adult novels. Her novels for adults therefore are not included in lists where it appears.)

Almost all nonfiction books that appear under her name were edited, not authored, by her.