John Hay Library
Built in 1910 and named for Abraham Lincoln's secretary, "the Hay" houses Brown University Library's collections of rare books and manuscripts. World-class collections of Lincoln-related items, H. P. Lovecraft letters, Napoléon's death mask, Walt Whitman's personal copy of Leaves of Grass, and 6,000 toy soldiers are of particular interest. The library is open to the public, but you need a photo ID to enter.