The University of Connecticut is undergoing a restoration project to revive 19th century Chilean newspapers documenting the years leading up to the war between Chile and an allied Peru and Bolivia. Over the centuries, the newspaper has become brittle and awkwardly creased in ways that make it difficult to read, even tearing when you try to turn the page. The University is using a humidification chamber that relaxes the pages, allowing for a series of follow-up techniques to restore and eventually digitize the print. The process lasts about 15 minutes.
You can read more about the process and view several pictures of the humidification chamber in operation in an article by Sidney Fussell in the Gizmodo web site at: https://goo.gl/zC610p as well as in the video below: