James is mentioned in the text of Holroyd's biography of Lytton Strachey, and in the introduction to the 1971 Penguin edition and the 1994--95 revised edition. James was the literary executor for his brother Lytton, so Holroyd saw James and Alix frequently over the five years from 1962 that he was researching and writing the first edition (published in 1967-68) of his biography of Lytton.
Holroyd
James