Rudolph Reinhard, Die Wichtigsten Deutschen Seehandelstädte, pp. 24, 25. Stuttgart, 1901. Joseph Partsch, Central Europe, p. 291. London, 1903.
Ibid, p. 301.
John Richard Green, The Making of England, Vol. I, pp. 51-54; maps, pp. 36 and 54. London, 1904.
Ibid, Vol. I, pp. 12, 63; maps pp. xxii and 54.
Ratzel, History of Mankind, Vol. III, pp. 98, 139. London, 1896-1898.
Joseph Partsch, Central Europe, pp. 284-288. London, 1903.
H. B. Mill, International Geography, p. 251. New York, 1902.
Rudolph Reinhard, Die Wichtigsten Deutschen Seehandelstädte, pp. 21-22. Stuttgart, 1901.
Fitz-Roy and Darwin, Voyage of the Beagle, Vol. II, pp. 140, 178; Vol. III, pp. 231-236. London, 1839.
Eleventh Census, Population and Resources of Alaska, pp. 166-171. Washington, 1893.