Placing Literature (www.placingliterature.com) provides a method for location-based author discovery. The website allows readers to find new authors and titles by a particular place. A person who is a fan of crime literature in Detroit can discover other books that take place nearby. Or a tourist traveling to London can investigate novels that take place in the city to get a better sense of the people who live there.
Las Vegas doesn't have any books mapped to it yet -- why not add one today?