Encyclopedia Files
We have a collection of 331 PDFs (PDF Encyclopedia Files) that we have downloaded from the Internet Archive. See https://encycloreader.org/files/
The collection was pulled from this list: https://nc.encyclosphere.org/f/261791 (.ods)
Blake analyzed the collection. The cleaned up dataset is https://nc.encyclosphere.org/f/435706 (.csv), and all the files related to his analysis can be viewed at https://nc.encyclosphere.org/f/435691 (Nextcloud folder).
Also see Encyclopedia Grading Project