Special Collections libraries collect, preserve, archive, and provide guarded access to rare, valuable, and unique materials. These materials can range widely and can include first or unusual editions of monographs; manuscripts; incunabulae (books printed in the 15th century); photographs; maps; realia (objects rather than printed or photographic material); materials focusing on a particular subject or historical era; or archival documents for an institution, organization, or individual. This category is for the web sites of Special Collections libraries.