Fifty-two discoveries from the BiblioPhilly project, No. 14/52 A volume with a rust stain from eyeglasses, presented with an actual pair of eyeglasses in front of it (exhibited in Le verre, un moyen-âge inventif, Musée National du Moyen-Âge-Thermes de Cluny, 20 September 2019 – 8 January 2018); Book of Hours for the Use of…

via A “Spectacular” Discovery: imprints of eyeglasses and their specific context in a Book of Hours — Bibliotheca Philadelphiensis