- TS copy of edited letters, 6 May 1923 – 27 December 1923.
- A second copy.
- Original unedited letter 16 May 1921. (TS edited version in Box I Vol.4).
- Original unedited letter 6 September 1921. (Not in TS edited version)
- Page of original letter 27 September 1921.
- Two random pages.
(In previous iterations of the handlist, this was referred to as Box 1C, which might appear in citations prior to 2019)