Answered By: Colleen Bryant
Last Updated: May 22, 2017     Views: 5

The Google Ngram charts changes in word frequency. See here for more information on what it covers.

HathiTrust uses a tool called Bookworm.  You can read more about that here.

There is a tool for the full run of the New York Times: http://nytlabs.com/blog/2014/07/23/chronicle-tracking-new-york-times-language-use-over-time/

The US News Map charts word use from US newspapers from 1789 to 1922.

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