A collection of letters sent to children by CS Lewis have gone on sale.

The 29 letters were sent by the Chronicles of Narnia author to an American family of eight siblings who had written to ask about his books.

The writer corresponded with the Kilmers between 1954 and 1963 and discussed his characters, religious beliefs, and advice on life.

Historical document dealer the Raab Collection is now offering them for sale for $110,000.