Reference Solutions This link opens in a new windowProvides directory information on U.S. business and residential listings. Searching may be done by either using the "quick search" option (searches by name, location) or by using the "custom search" option. With the custom search, geographic location, SIC/NAICS code, revenue, number of employees, ownership, financial data, or any combination of the above may be used as search terms. In addition to address and phone number, each entry includes officer names and titles, corporate affiliation, and business type, among other information.