If you're looking for sales leads, you can gather telephone directories for every city in the United States--or just purchase American Business Information's Households USA or Business USA searchable databases on CD-ROM. The Households USA Database is a 12-CD-ROM set containing 100 million residential phone number and address listings as well as Census data on residents' ages, incomes and home values. The Business USA CD-ROM has 10 million business listings and provides credit rating codes, estimated sales volumes and even stock exchange symbols. The price of each database entitles you to a year's worth of listing updates.
American Business Information's Households/Business
price: $795 (each)