"The library was surveyed shelf by shelf in Milan, with the position of every volume, thematic groupings and connections between authors and disciplines carefully documented, so that the new premises in Bologna could reproduce Eco's original arrangement exactly, down to which books he kept lying flat and which stood upright." https://www.wantedinmilan.com/news/umberto-eco-library-opens-in-bologna-10-years-after-his-death.html