Chicago Magazine. [March 27, 2008]. (原始内容存档于2017-05-07). Cowley, Jason. A traveller in the realm of the mind. The Times. September 22, 1997 [March 27, 2008]
Photos Journals, photos, videos and a breakdown of costs from a British traveller's website A 1903 map of Trans-Siberian railway (页面存档备份,存于互联网档案馆) Google