Don't wipe Tibet off the map

TIBET is not marked on your map showing the sources of the Yangtse and the Mekong rivers (in Tibet), only China ("Explorers hail 1990s as 'golden age of discovery' ", 30 April). It is necessary to read the accompanying article in order to know that the location is in fact Tibet.

As a teacher, I have been appalled that some school atlases no longer show Tibet. In light of the huge efforts by the Dalai Lama to get the West to support the plight of Tibet, it is shocking to see Western map- makers erasing it, thus helping the Chinese to wipe it out of existence.

C Newcombe

Cambridge