The Library of Congress is having an exhibition “Ancient Manuscripts from the Desert Libraries of Timbuktu”:
These ancient manuscripts cover every aspect of human endeavor. The manuscripts are indicative of the high level of civilization attained by West Africans during the Middle Ages and provide irrefutable proof of a powerful African literary tradition. Scholars in the fields of Islamic Studies and African Studies believe that analysis of these texts will cause Islamic, West African, and World History to be reevaluated. These manuscripts, surviving from as long ago as the fourteenth century, are remarkable artifacts important to Malian and West African culture. The exhibited manuscripts date from the sixteenth to eighteenth century.
Many sample pages can be seen here. (Thanks, Mike!)