TCG Letter #277 / Carpenter Letter #125

The Letters of J.R.R. Tolkien (1981), pp. 137-9

The J.R.R. Tolkien Companion and Guide - Chronology (2017), pp. 379-80

J.R.R. Tolkien A Descriptive Bibliography, Di1, p. 350

Error in Kindle editions: ‘onomastical – outing’ and ‘simple to sleep’ > ‘ONOMASTICAL – OUTING’ and ‘SIMPLE to SLEEP’

Cartas de J.R.R. Tolkien, pp. 206-8

The Letters of J. R. R. Tolkien: Revised and Expanded ed. (HarperCollins, UK), pp. 195-96