Donald de Carle was a Fellow and Medallist of the British Horological Institute and Freeman of the City of London by virtue of being a Liveryman of the Worshipful Company of Clockmakers. He contributed to the Encyclopaedia Britannica and was the author of many other horological works including Clock and Watch Repairing, Complicated Watches and their Repair, Practical Watch Repairing, ... Read morePractical Clock Repairing, Watch and Clock Encyclopaedia, Clocks and their Value, Horology ('Teach Yourself Series'), Practical Watch Adjusting and Springing, Watches and their Value, etc. Donald de Carle died in 1989. Show Less