Scope and Contents This file contains 1 letter from Chang Chih-Wen to Joseph Needham dated 17 May 1945 and 1 letter from Joseph Needham to Chang Chih-Wen dated 17 Oct. 1948. These letters relate to a project by the University of Nanking for a Sourcebook of the History of Agriculture in China. Joseph Needham's notes state that it will contain 'extracts from 860 books on plant production, animal production, agriculture economics etc. to +1858 from earliest times'. The file includes copied sheets relating to the...