Allen, Thomas Gaskell ; Sachtleben, William Lewis.
Across Asia on a bicycle : the journey of two American studients from Constantinople to Peking. (New York, N.Y. : The Century Co., 1894). [Bericht der Reise über die Türkei, Persien, Turkestan bis China 1890-1893].
http://www.gutenberg.org/ebooks/31111.
https://archive.org/details/bicycle_asia/page/n9.
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(AllT1)
Travel and Legation Accounts