James Malmesbury. Diaries and Correspondence of James Harris, First Earl of Malmesbury. Containing an account of his missions to the Courts of Madrid, Frederick the Great, Catherine the Second, and the Hague... Edited by his grandson, the third Earl. Volume 4.
Elibron Classics, 2004, 454 pages. ISBN 9781402142598 paperback ISBN 9781421292625 hardcover
This edition is published in 4 volumes sold separately.
Replica of 1844 edition by Richard Bentley, London.