Do you have a project or tool using the HTRC Extracted Features Dataset? Let us know at


Word Similarity Tool, David Mimno

A web-based tool for viewing similar words to a query, for each year from 1800 to 1923.



An interactive, faceted, visualization of terms across the HathiTrust collection, built on the EF dataset.


Within-Book Topic Modeling, Peter Organisciak

An approach for visualizing thematic trends within a book.



HTRC Feature Reader

A Python library that scaffolds Pandas use of EF data. With example scripts.


Tutorials, Lessons

Send us your Lessons or Tutorials related to the EF Dataset.

Python code for some simple examples of "literary sleuthing": 


Blog Posts

Underwood, Ted. June 3, 2014. "A window on the twentieth century may be about to open." The Stone and the Shell. Blog.

Mimno, David. 2014. "Word counting, squared." David Mimno. Blog.