...
A volume's copyright and license status affects how researchers are permitted to interact with the data for that volume. Only public domain volumes are available via the HathiTrust Data API and custom data request process. AdditonallyAdditionally, there are access restrictions based on the digitizing agent of volumes in HathiTrust that impact use if the HT Data API and custom data request procedures. Read more here: https://www.hathitrust.org/data. Only public domain volumes are available for research via the HTRC Analytics site and Data Capsulses compute environments. HTRC Extracted Features and the HT+Bookworm tool, however, do provide analytic access to derived data from the entire corpus.
...