Andrew has been writing since the late 1980s, when he left an established career in advertising and took off for Alaska, linking up with veteran travel writer Deke Castleman to research and update the fourth edition of Moon Alaska-Yukon. He has produced several guides to Canada, including books on British Columbia, Vancouver, the Northwest Territories, Nunavut, Alberta, and Western Canada. He is also the coauthor of Moon guides to Atlantic Canada, Australia and New Zealand and a contributor to Moon San Juan Islands, Road Trip USA, Northwest Best Places, Eyewitness Guide to the USA, as well as the updater to the last three editions of The Illustrated Guide to New Zealand. His writing and photographs have appeared in a wide variety of media, including National Geographic Traveler, Travesias, Where, Interval World, and Microsoft's Automap.