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One of the most celebrated objects in the history of photography, The Niépce Heliograph, is featured in a permanent exhibition just inside the main entrance to the Harry Ransom Center. The untitled photograph—the earliest known surviving photograph made with the aid of the camera obscura—was produced in 1827 by the French scientist and inventor Joseph Nicéphore Niépce using a process he called héliographie. Permanent exhibitions are never really “permanent,” however; objects may remain in place, but their meanings are always evolving, and exhibitions are periodically revised to reflect those advances.