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*[https://archive.org/details/memoirsofmalayan0000purc/page/n5 ''The Memoirs of a Malayan Official''] by Victor Purcell 1965 Archive.org Lending Library. As a member of the Malayan Civil Service from 1921, he was soon after sent to Canton and Peking to study Chinese from [https://archive.org/details/memoirsofmalayan0000purc/page/100 page 101].

*[http://digitallib.stou.ac.th/handle/6625047444/1847 ''The Dragon and the Foreign Devils''] by Johan Gunnar Andersson ; translated from the Swedish by Charles Wharton Stork 1928. Translation of the author's "Draken och de främmande djävlarna". Link to a number of pdf downloads STOU Digital Repository Sukhothai Thammathirat Open University, Thailand.

*[https://archive.org/details/journeytobeginni00snow/page/n5 ''Journey to the Beginning''] by Edgar Snow 1958. [https://archive.org/details/journeytobeginni0000snow File 2: 1972 reprint]. Archive.org Books to Borrow/Lending Library. [https://en.wikipedia.org/wiki/Edgar_Snow Edgar Snow] Wikipedia. Snow was an American journalist who lived in China for many years from 1928, best known for his book, ''Red Star Over China'' (1937), an account of the Chinese Communist movement from its foundation until the late 1930s.

*[http://digitallib.stou.ac.th/handle/6625047444/2204 ''New Lamps for Old: An Interpretation of Events in Modern China and Whither They Lead''] by Anatol M Kotenev. published Shanghai : North-China Daily News & Herald, 1931. Link to a pdf download STOU Digital Repository Sukhothai Thammathirat Open University, Thailand. Elsewhere, about the author: "As Russia fell to the communists, he escaped with his family to China and served with the British Colonial Service in Shanghai. He was a noted lecturer and author of several books on the history and politics of China".