Peter Skene Ogden's Snake Country Journals, 1827-28 and 1828-29 by Peter Skene Ogden, Glyndwr Williams (0855070013 9780855070014 0-85507-001-3)
London Correspondence Inward from Sir George Simpson, 1841-42 by George Simpson, Glyndwr Williams (0855070021 9780855070021 0-85507-002-1)
