 Whilst in prison, he was encouraged to write his memoirs by the Cheka, which he was able to do in great detail with the help of his military notes and campaign diary.He filled three large exercise books with these memoirs.Extracts from these appeared in Issue 3 of Letopsis Revoliutsii (Annals of the Revolution) No3, May–June 1928 with many text changes by the Soviet censors.