Books can be attributed to "Anonymous" for several reasons:
* They are officially published under that name * They are traditional stories not attributed to a specific author * They are religious texts not generally attributed to a specific author
Books whose authorship is merely uncertain should be attributed to Unknown.
Another of the crown jewels of my collection; I was non-too-shy about dropping hints the Xmas around when this high quality facsimile edition of the Voynich Manuscript came out. --MK