HathiTrust+Bookworm is an online tool for visualizing trends in language over time. Developed by the HathiTrust Research Center using textual data from the HathiTrust Digital Library, it allows you to track changes in word use based on publication country, genre of works, and more. 

The HathiTrust Research Center (HTRC) is the research arm of the HathiTrust Digital Library (HTDL). The HathiTrust Consortium is a multi-institutional partnership that seeks to preserve the cultural record by digitizing books, serials, and other forms of information and making them available digitally through the HTDL.

The Hathi Trust Digital Library has millions of volumes of digitized content and grows in number every day.

Using the HathiTrust+Bookworm tool, you can visualize lexical trends. 

This guide will teach you how to use HT+BW.

Except where otherwise indicated, original content in this guide is licensed under a  Creative Commons Attribution (CC BY) 4.0 license. You are free to share, adopt, or adapt the materials. We encourage broad adoption of these materials for teaching and other professional development purposes, and invite you to customize them for your own needs.