The University of Michigan's Center for Middle Eastern and North African Studies provides this website with numerous downloadable PDF's that catalogue various types of bibliographical resources, Middle Eastern periodicals, manuscript catalogues, dictionaries, and more.

For a small, non-comprehensive, but still useful hand reference on the main catalogues of manuscripts libraries and collections (especially in the West), download this PDF from their site.

The Near Eastern Division also provides this list of links to numerous other websites, including a number that provide or discuss Islamic and Middle Eastern manuscripts.