I have found a workaround. I converted my entire Calibre library books as an ePub. My Calibre Library contains MOBI, ePUB, PDF, TXT, DOC, XML, CBZ (comic books). > 3000 items with metadata
Calibre> Convert books> Create a catalog of the books in your directory> Catalog format (choose from azw3, epub, XML, csv, mobi, bib).
If you choose e-Pub, click on the tab “E-book options” and select your e-Book options. I tried it with all the bells and whistles options and because my catalog is pushing 3000, the first go took a while and the file was 16MB. When I tried with only “Author” and “Description” it came to 12MB. Cover art will generate.
In DevonThink, to File> Import> File & Folders
Select the ePub (likely named “My Calibre Books”)
The result will be an item with “(EPUB)” as its Kind. It presents as an index that is alphabetized and hyperlinked. In my case, books are alphabetized by author. However, if you prefer to view by title, you change the sorting in the ePub native file by title and import that version instead.
Good luck.
