History 190: World History Through Keywords. Spring 2017

Searches the full text of books and magazines that Google has scanned, converted to text using optical character recognition (OCR), and stored in its digital database

When you enter phrases into the Google Books Ngram Viewer, it displays a graph showing how those phrases have occurred in a corpus of books over the selected years.

How to do a wildcard search, inflection search, case insensitive search, part-of-speech tags and ngram compositions. FAQ at the bottom.

The Google Books Ngram Viewer is optimized for quick inquiries into the usage of small sets of phrases. If you're interested in performing a large scale analysis on the underlying data, you might prefer to download a portion of the corpora yourself.

From a professor in the School of Information at the University of California, Berkeley.

Issues with metadata

Journal of Library Metadata. Volume 12, Issue 1, 2012. Pages 15-22.

Short discussion on the "long s" (aka as "medial s") and OCR.

HathiTrust is a partnership of academic & research institutions, offering a digital repository of 11+ million books. 3.3 million books are in the public domain.

FAQ

Enables computational access to published works in the public domain and, in the future, on limited terms to works in-copyright from the HathiTrust. The HTRC offers a suite of tools for computational text analysis.

FAQ

Includes historic U.S. newspapers, Congress, science and social science research.

FAQ located at http://corpus.byu.edu/faq.asp

Covers the history, literature and culture of the Greco-Roman world.

This is a repository containing a subset of Princeton’s Latin American Ephemera Collection.