Presentation of results of professional research of manuscripts and printed books using special recording devices and light sources as well as X-rays. It is focused mainly on examples of image records of elements hidden in bookbinding or in the used book materials. It presents visualizations of information invisible to the naked eye.

The exhibition has been organized as the main result of NAKI II Project of the Ministry of Culture of the CR entitled Use of Imaging Techniques For the Study of Hidden Information In Bookbinding.

National Library of the Czech Republic - Exhibition Corridor on the Ground Floor (Entrance A)