Stock Photo - 14 September 2020, Saxony, Leipzig: In the baroque backdrop library of the Francke Foundations in Halle/Saale, Tina Oley from the specialist company Preservation Academy Leipzig cleans valuable book collections from the 15th-18th centuries of dust, microorganisms and pests using special vacuum cleaners and microfibre cloths. 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