In the 1950s, as a boy, Rodney de Little became fascinated by windmills and, with the gift of a camera from a relative, began assembling an unrivalled record of them in black and white photographs. His standing as a leading authority on the history and operation of these mills was recognized on the publication of his book The Windmill - Yesterday and Today in 1972. It was reprinted in 1975 and remains, today, an authoritative work in its field and much sought after in the out-of-print trade. In the last twenty years much has changed. What were seen as mechanical, historical curiosities, lacking any contemporary relevance, are now finding new commercial opportunities and uses as this traditional technology has been successfully married to modern technological advances It is becoming clearer that there is much to be learned from the uses and mechanisms of traditional windmills.