Henry David Thoreau (2017). “Journeys, Adventures & Life in Harmony with Nature – 6 Book Collection (Illustrated): Including Walden, A Week on the Concord and Merrimack Rivers, The Maine Woods, Cape Cod, A Yankee in Canada & Canoeing in the Wilderness - North American Highlands Series”, p.199, e-artnow
Wolfgang Amadeus Mozart, Friedrich Kerst, Henry Edward Krehbiel (1926). “Mozart: The Man and the Artist Revealed in His Own Words”, p.7, Courier Corporation