Hosie, Alexander.
On the trail of the opium poppy : a narrative of travel in the chief opium-producing provinces of China. (London : G. Philip & Son, 1914).
Band 1:
https://archive.org/stream/ontrailofopiumpo01hosi#page/n7/mode/2up.
Band 2:
https://archive.org/stream/ontrailofopiumpo02hosi#page/n7/mode/2up.
(Hos5)
Travel and Legation Accounts