
Google Scholar (note the presence of InfoLink) . Be sure to set your Scholar preferences. See also:
Google Book Search (note links to WorldCat, InfoLink). Some content requires a Google account.
Google News Archive but don't pay for articles!
Try these instead:
Google – the one that initiated Google's popularity, now with new features
Google U.S. Government (includes state and local governments). Google Book includes some government source material. You may also want to try these sources:
Wolfram Alpha – focuses on data