The Lyttelton Hart-Davis Letters - A Selection
George Lyttelton and Rupert Hart-Davis
The Lyttelton Hart-Davis Letters 1955-1962 - A Selection
London: The Akadine Press, 2001.
First UK edition, thus.
Originally published in six volumes, this is a selection by Roger Hudson, of the crème de la crème from over 600 letters.
Lyttelton was a retired teacher and Hart-Davis a successful publisher, and their erudite anecdotes make what Joyce Grenfell called "rich eavesdropping".