Here are some of the research tools that we find useful.
Switchboard is the answer, and they give addresses, too.
While perhaps a little more opinionated in its news columns than we might wish The New York Times is still the paper of record for the world. While speaking of newspapers, there are several other well respected papers on line. For example, The Boston Globe. Across the country you'll find The San Francisco Chronicle and Examiner. And, to cover the heart of the nation, dozens of papers in most of the fifty states have been gathered by The San Diego Daily Transcript.