Zilpha Keatley Snyder's Green Sky Trilogy

Over the years I've picked up a few books by Zilpha Keatley Snyder that I remembered loving as a kid -- specifically, The Egypt Game and The Velvet Room . But the one I kept wondering about was Below the Root and its sequels ( And All Between and Until the Celebration ), which form the Green Sky trilogy, and recently I found I could get them all in ebook from my library. So I did a binge! And…