1konallis
The forthcoming book Tolkien's Library: An Annotated Checklist, by Oronzo Cilli, describes books Tolkien owned, read or cited. https://www.tolkiensociety.org/2018/06/new-book-on-tolkiens-library-announced/
4bumblybee
I'd be interested in taking this on if no one else has yet - is there a formalized process for reaching out to the publisher for permission? This is their site.