Correspondence and papers of Robert O A Crewe Milnes, Marquess of Crewe, concerning his biography of the Earl of Rosebery, published at the request of Rosebery's trustees and of his son, the 6th Earl., 1862-1933, undated., MSS.10195-10205. Political correspondence and papers of Archibald Philip Primrose (1847-1929), 5th Earl of Rosebery, statesman and author., MSS.10001-10216. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/21748 Accessed September 23, 2024.