Clyde S. Kilby 18 December 1965
- Subject: Tolkien accepts Kilby's suggestion to help him work on The Silmarillion manuscripts.
- Publication: A part of this letter was published as letter 282 in The Letters of J.R.R. Tolkien. An excerpt from the letter (only containing material from letter 282) has also been reprinted in SEVEN, Volume 27 (p. 49). Still another part of the letter (including a line not found in the above sources) was published in The J.R.R. Tolkien Companion and Guide: Chronology (pp. 649-50).