Enid Blyton 
The Magic Faraway Tree 

Brief Summary by Robert Houghton: Cousin Dick comes to stay with Jo, Bessie and Fanny and together they share many more wonderful adventures up the Faraway Tree. With Moonface, Saucepan Man and Silky the pixie, they explore the amazing lands to be found at the top of the tree – the Land of Spells, the Land of Toys, and the tempting Land of Goodies, but then one day Moonface, Silky and Saucepan Man disappear mysteriously. Where have they gone, and why are people from the Land of Tempers living in the tree instead?