LEGAL RESEARCH GUIDE: Finding Facts from Virtualchase is a compilation of electronic reference sites. Some of the sites included here are: Airport & City Code Converter, helps to convert airport or city codes to airport or city names and vice versa. It also provides market data including the number of domestic markets served, the daily average number of passengers, the average price of a one-way fare, and the daily average number of miles flown. Another site City Search (Find a County) provides a utility for looking up counties by city. Enter a city name to find a list of matching counties. Alternatively, you can display all cities within a state and the counties in which they reside. If you follow the link for the county name, the utility displays a list of all cities within the county.