Calibre Library/metadata.db
Calibre Library/J. R. R. Tolkien/Beren and Luthien (123)/
Beren and Luthi - J. R. R. Tolkien.epub
Beren and Luthi - J. R. R. Tolkien.pdf
cover.jpg
metadata.opf
Calibre Library/Author Name/Book Name (db number)/
Truncated Book Title - Author Name.epub
cover.jpg
metadata.opf
Calibre ebook libraries (server: Calibre-web) are structured as follows and include book metadata and covers: