J. S. Holliday. Rush for Riches: Gold Fever and the Making of California. Berkeley, CA, 1999. P. 183.

По оценке J. G. Smith, опубликованной: Frederick H. Armstrong. City in the Making: Progress, People and Perils in Victorian Toronto. Toronto, 1988. P. 253; Rollo Arnold. New Zealand’s Burning: The Settlers’ World in the Mid-1880s. Wellington, New Zealand, 1994; W. Bruce Lincoln. The Conquest of a Continent: Siberia and the Russians. Ithaca, NY, 1994. P. 263.