Map, titled “Flintshire”c. 1610, by John Speed, Private collection. View fullsize Before Treatment – Map framed with acidic materials, mat window covering image area View fullsize Before Treatment – Unframed, showing decorative border areas previously covered by mat window View fullsize Before Treatment – Detail in raking light, area of skinned paper rolled up View fullsize Before Treatment – Detail in raking light, area of previous repair, tenting paper support, and light green mount board visible View fullsize Before Treatment – Detail of small loss, showing light green mounting board View fullsize Before Treatment – Detail of small loss, showing light green mounting board View fullsize Before Treatment – Detail of surface dirt and staining View fullsize Before Treatment – Detail of small loss, showing light green mounting board View fullsize After Treatment – Map framed with Artcare Alpha Rag mats, mat window revealing previously obscured image area View fullsize After Treatment – Unframed mat and mount board View fullsize After Treatment – Detail of small filled loss View fullsize After Treatment – Detail of filled loss along the left edge View fullsize After Treatment – Detail of previously repaired area with tenting paper laid back down View fullsize After Treatment – Detail of surface dirt and staining reduced View fullsize After Treatment – Detail of filled loss and skinned area tacked back down in place View fullsize After Treatment – Detail of toned fills along edges to cover the light green mounting board so it is not revealed in new mat window