Stock Photo - 14 September 2020, Saxony, Leipzig: In the baroque backdrop library of the Francke Foundations in Halle/Saale, employees of the specialist company Preservation Academy Leipzig clean valuable book collections from the 15th-18th centuries with special vacuum cleaners and microfibre cloths to remove dust, microorganisms and pests. Over the next few weeks, around 64,000 books will be individually removed from the shelves in Germany's oldest secular library building, especially the scenery library, and then, after dry cleaning, the spines, cut edges and shelves will be put back in place. The almost 300-year-old library with its shelves placed in the room like a theatre backdrop is visited by researchers, scientists and guests from all over the world. Photo: Waltraud Grubitzsch/. - Leipzig/Saxony/Germany