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Elephind is a great service that searches online digital newspaper collections. Best of all, it is available free of charge.
Elephind.com is a search engine that operates much like Google, Bing, and other search engines. The one thing that is different with Elephind is that it searches only historical, digitized newspapers. It enables you to search for free across many newspaper sites simultaneously rather than having to visit each collection’s web site separately.
At this time Elephind has indexed 2,677 newspaper titles containing more than two and a half million editions, ranging from March 1803 up to August 2013. The Elephind search engine has indexed 141,628,238 items from 2,677 newspaper titles. These include such well known sites as Chronicling America (the U.S.’s Library of Congress) and Trove (National Library of Australia), as well as smaller collections like Door County Library in Wisconsin. Many of the smaller newspaper sites are not well known and may be difficult to find with the usual search engines, but they are searchable from Elephind.com. A list of available newspaper collections that have been indexed so far is available at http://goo.gl/VRQN5l.
Additional newspaper collections are added to Elephind’s indexes frequently.
I found that Elephind operates in much the same manner as many other search engines. If you already know how to search for things in Google, Bing, Yahoo, or elsewhere, you already know how to use Elephind. In fact, there are two search methods available on Elephind: