David Henley is a professional photographer and travel writer based in Chiang Mai, Thailand, where he has lived with his wife and family for more than 20 years. He has been published by Insight Guides, Berlitz, Dorling Kindersley, National Geographic, Frommers, Thomas Cook, AA Publishing and a wide variety of other publishing houses and publications. He has traveled extensively in Asia, and is currently Managing Director of CPA Media Ltd (Crescent Press Agency, www.cpamedia.com); Pictures From History, an online image library specializing in historical images of Asia (www.picturesfromhistory.com); and Cognoscenti Books (www.cognoscentibooks.com).