1. CVMA /Italy historical-artistic data sheet concerning the stained-glass window “Santi” of the Basilica of San Petronio, in Bologna: https://www.icvbc.cnr.it/bivi/schede/Emilia/bologna/2sanpetronio.htm Last access October 27, 2022.
2. No documentation was found even in the historical archive of the archaeological, fine arts and landscape superintendence for the metropolitan city of Bologna and the provinces of Modena, Reggio Emilia and Ferrara. The Archive was established in 1892, so the aforementioned restoration could probably precede that date. However, the examination survey carried out by the restorers of Studio Fenice, Corallini and Bertuzzi attests the evidence of this intervention (see the technical report of the recent conservation intervention by Studio Fenice, dated 2022 and kept in the Historical Archive of the Basilica of San Petronio).
3. Never published, this letter, dated 29.04.1949, is part of the correspondence between the restorer Guido Polloni and the superintendent Eng. Barbacci, preserved in the Historical Archive of the Archaeological, Fine Arts and Landscape Superintendence for the metropolitan city of Bologna and the provinces of Modena, Reggio Emilia and Ferrara, via IV Novembre n. 5, Bologna, folder BOM17, protocol n. 541 dated November 30, 1949.
4. There are no publications in this regard. The restoration was carried out between 2004 and 2007 by restorers Camillo Tarozzi and Silvia Baroni, and is quoted, without any indication of date in the Baroni curriculum at the web address: https://www.bonificarenana.it/upload/consorziorenana/gestionedocumentale/BaroniSilvia_784_4898.pdf, last access October 27, 2022. The technical report of this restoration was not found either in the Historical Archive of the Basilica of San Petronio, nor in the Historical Archive of the Archaeological, Fine Arts and Landscape Superintendence for the metropolitan city of Bologna and the provinces of Modena, Reggio Emilia and Ferrara. The unique reference to this restoration of the stained-glass windows of Cappella Notari was found in the Historical Archive of Superintendence as a request of funding to the Carisbo foundation, dated December 12, 2003, protocol n.20723.