...
There are several ways to troubleshoot incorrect cover images with Google. Use the partner support form to report errors.
- You can plug the OCLC number into this URL: https://books.google.com/books?vid=OCLC[insert number here], such as: https://books.google.com/books?vid=OCLC1021859160. If this returns the wrong book data, it is an error on Google's end. See more, with examples of static URLs, here: https://developers.google.com/books/docs/static-links.
- Or, you can inspect the cover image in the browser:
...