Small businesses may be online, even if they don&#x27;t know it. If they have a phone number and an address, they are probably listed on Yelp, Foursquare, Facebook, Google, Citysearch, Superpages, etc. You could search these sites for contact info, or use an API like Factual. If you want truly old school businesses who aren&#x27;t online at all, try the phone book.