Neat, but .pdf's would have been nice...
I can easily convert these to PDFs, but I can actually read them on my Kindle or iPad. I can't do that the other way around from PDF (though I technically can read a PDF on either, it's a far less pleasant experience).
Otherwise you can use calibre to convert it to epub.
(Kindle app might do it if it can load books as mobi is native kindle format)
(Edit: wow, that was terrible. Not one of the converts worked out properly. apologies if, like me, you downloaded them all)