Scans containing only text allowed in pools?

Is it fine to upload scans of pages that don't contain any art for the sake of completion of the scanned books?

For example, in my current projects i have a page with a summary of the artists, a page with artists' comments, and the back covers with just the logo of the franchise.
Not encouraged but I'd say it depends on what exactly "project" you're talking about.
Thanks for the reply.
They are scans of theater pamphlets.