Letter from Derk Bodde of the University of Pennsylvania, U.S.A. accompanying a cutting of his letter published in the 'New York Times' about the Chinese philosopher Chang Tsai, (1020-1077) and discussing other matters, 1951-09-01 - 1952-05-05, GBR/1928/NRI/SCC2/59/1/17. The Papers and Possessions of Joseph Needham, GBR/1928/NRI/NRI2. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/343554 Accessed May 01, 2024.