Never before seen letters reveal the story of the scientist who laid

When British doctor Sir Ronald Ross discovered the crucial link between mosquitos and malaria at the end of the 19 century, he understandably thought it marked the beginning of the end of the deadly disease – rampant then not only in colonial India and Africa, but also in southern European countries such as Greece and Italy.

Maureen Dunlop

Further to your obituary of Maureen Popp, née Dunlop (11 June), as a close friend of Maureen – and, like her, a former pilot – I was honoured to be asked to escort her to an investiture meeting of the Guild of Air Pilots, writes Richard Gregory.

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