(1) Byron's Letters and Journals, Volume VII: ‘Between two worlds,’ 1820 George Gordon Byron, Leslie A. Marchand ISBN: 9780674089471 Harvard University Press View at publisher
(2) George Henry Lewes: A Victorian Mind Hock Guan Tjoa ISBN: 9780674348745 Harvard University Press View at publisher
(3) Letters of the Lewis and Clark Expedition, with Related Documents, 1783-1854: Two volsSecond Edition Edited by Donald Jackson ISBN: 9780252006975 University of Illinois Press View at publisher