Puffin, New York, 1986, 1^st pr thus.  ISBN 0-14-032163-2.  Soft cover, 107 pages.  Some edge and cover wear, corner bends and rubs; binding sound; interior clean and unmarked, pages tanned, occasional straightened corner bend.  A Newbery Honor Book.  ‘Greta had always loved the fog – the soft gray mist that rolled in from the sea and drifted over the village.  The fog seemed to have a secret to tell her.  Then one day when Greta was walking in the woods and the mist was closing in, she saw the dark outline of a stone house against the spruce trees – a house where only an old cellar hole should have been.  Another time, Greta saw a surrey come by, carrying a lady dressed in plum-colored silk.  The woman beckoned for Greta to join her, and soon Greta found herself launched on an adventure that would take her back to a past that existed only through the magic of the fog.’ (from rear wrap)