Library of Tibetan Works and Archives (Inde)
http://www.ltwa.net/library/
Trace Foundation Latse Library (Etats-Unis)
http://trace.org/latse-library
India Office Records and Private Papers, British Library (Royaume-Uni)
http://www.bl.uk/reshelp/findhelpregion/asia/india/indiaofficerecords/indiaofficehub.html