On the National Library of Scotland’s blog, a look at steps taken to conserve and repair two damaged 19th-century maps. “These case studies show some of the treatment options available for large maps, and demonstrate the challenging decisions that have to be made in order to care for the Library’s collections in their entirety. The principles at the heart of every conservation intervention are reversibility and retreatability, which ensure that we can always return to an object in the future if circumstances change.” [via]