Letter from The University Museum at University of Pennsylvania to Wesley Needham.
Discussion of where the fabric for the mounting of the thangka of Hayagriva may have come from. Hypothesizing that it may come from Imperial Court of China.
Wesley E. Needham Papers. Tibet Mss 64. Box 15. Research notes, Tibetan Art; Folder 4. General Collection, Beinecke Rare Book and Manuscript Library, Yale University.
“Letter from The University Museum at University of Pennsylvania to Wesley Needham. ,” Himalayan Collections @ Yale, accessed October 20, 2017, http://himalayancollections.commons.yale.edu/items/show/1622.