R. R. Sowerby: Sowerby of China (1956) ; W. Bingham 1955 ; S. Drake 1955 ; obituary in Nature 174 1954: 723 ; Cleevely 1974: 529-34 ; AdCS, Alice Muriel Sowerby & Joan Evelyn Stone: The Sowerby Saga (Washington, D.C. 1952) ;
Further Places of Activity: United Kingdom, USA, Far East, East China, Mongolia, Manchuria, and Korea. On Clark Expedition to North China in1908-9 ;
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