Looking for a checklist licensed CC BY!
Example: Does anyone have an accessibility checklist to run through prior to releasing an open textbook?
While not a fan of checklists (they are only a ‘partial’ approach to a11y), perhaps you would like the https://open.bccampus.ca/2015/02/26/introducing-the-b-c-open-textbook-accessibility-toolkit/
Thanks, Jess! Definitely not the only thing to do when making an accessible open textbook – we recommend that creators think about accessibility from the very get-go, from the conception phase of their book all the way through to release (and even after, to keep improving).