Five Children on the Western Front
I adored all E. Nesbit's books and I read Five Children and It many times. Five Children on the Western Front is a worthy successor, but I can't imagine there would be many contemporary children who are familiar with the original. I tried reading Five Children to my daughters when they were young; I forced them to sit through The Railway Children; I tried The Treasure-Seekers on them, too. But they just didn't take. Perhaps the gap between Nesbit's early 1900s world and mine of the 1970s was just about bridgeable; but the chasm of a hundred years was too wide. So perhaps the audience for this book is nostalgic adults like me.
Like the Psammead itself, this book didn't quite recover the all the magic of the original stories. But it had just about enough to enchant me. Sweet and sad.