Current links to a handful of resources with links to books in African languages, some digitized and some born digital:
The Digital Somali Library at Indiana, and a hyperlinked Book of Genesis in Nuer.
The African Language Materials Archive, a collaborative project between DLIR and WARC.
SIL Bibliography (Country Index: Africa).
Check back for more; we’ll be eager to see this list grow!
A good collection of various language-related resources, in particular for African languages, can be found here: http://www.uz-translations.su/