(Incidentally, Tombouctou is the French spelling of Timbuktu—French is the official language of Mali—and the spelling preferred in the Library of Congress Name Authority File.)
After French and Malian troops retook Timbuktu from rebel forces (January 28), there were fears that many of Timbuktu's manuscripts had been destroyed. Fleeing militants did attack the Ahmed Baba Institute. "As Extremists Invaded, Timbuktu Hid Artifacts of a Golden Age" and "Historic Timbuktu Texts Saved From Burning" are among the news articles reporting that in fact most of Timbuktu's valuable manuscripts had been saved because they were hidden or relocated.
There is a long sad history of libraries around the world being destroyed, e.g., as described in Lost Libraries: The Destruction of Great Book Collections since Antiquity. The work is classed in 027.009 History of general libraries, archives, information centers, built with 027 General libraries, archives, information centers, which has the class-here note "Class here comprehensive works on libraries, on archives, on information centers, on libraries and information centers devoted to special materials," plus T1—09 History and biography (extra zero for standard subdivisions as instructed at 027.009).
What about the heroes who saved the manuscripts of Timbuktu? One thinks of the war in Iraq, and of Alia Muhammad Baker, the librarian who smuggled books to safety in war-torn Basra. Two children's books celebrate her: Alia's Mission: Saving the Books of Iraq: Inspired by a True Story and The Librarian of Basra: A True Story from Iraq. Both are classed in 020.92 Biography of archivists, information scientists, librarians, built with 02 Library and information sciences (final placeholder 0 in 020 deleted before notation added) plus T1—092 Biography. DDC does not have a special number for librarians who are heroes, but we recognize them nevertheless—kudos!