Letters from Father Christmas

Surprising book from J.R.R. Tolkien (miles away from the Lord of the Ring).
What it is:
"Every December an envelope bearing a stamp from the North Pole would arrive for J.R.R.Tolkien's children. Inside would be a letter in strange spidery handwriting and a beautiful coloured drawing or some sketches. The letters were from Father Christmas. They told wonderful tales of life at the North Pole"

It is truly delighting to read the stories from the North Pole told by Father Christmas and the North Polar Bear, his assistant. Even for the grown up :)
Not to mention the drawings sent with them to illustrate the stories.