The description for Lot 371 (p.???) includes extracts from a two-page letter to Michael Blashka (not dated, but c.1960s) – sent to Joy Hill for typing along with a single page note to Joy about the letter and addressee.
The first page of the letter is reproduced in a photograph.
The letter and note are not included in The Letters of J.R.R. Tolkien (1981).