"The day of my departure draws near...."

This is the Autobiography typescript carbon, pages 148-9; the letter is numbered "1", the location London, and the date April 1920.

It was actually written after Russell's return from Russia on 30 June 1920.

This is a transcription of document .200662, record 19660.

There are three other transcriptions:

ribbon copy, document .200648, record 19653;
carbon copy, document .052462, record 99948;
document .052454, record 99930; different typing.

The date of 24 April 1920 is used in the published Autobiography, and it appears in other transcriptions. Thus it is used here as well.