Recently, there have been some problems linking to Project Muse eBooks. Last month, some records were added to the Catalogue for ebooks not yet published. This should all be sorted by the end of August.
So, please report any ebook problems via out Help Form, but also be aware you may have to go to Project Muse’s site to search for the ebooks directly AND that some are not there (as they aren’t even published yet).
Sorry for the temporary confusion.