Shadow Castle by Marian Cockrell, Scholastic paperback printing, TX519, 1968, 141 pages. Illustrated by Olive Bailey.
DESCRIPTION: “In the middle of a deep, dark forest there is a castle. Only shadows live here- shadows of kings and queens who are waiting.
They have been waiting for hundreds of years. They have been waiting for someone to break the enchanted spell that was cast upon them.
Then one day a girl named Lucy wanders into this shadow land…” (from the back cover)