In this season's summer bonus episode, you may be surprised to hear that the lowly vintage ferrotype plate still receives some academic and scientific research, 150+ years after its introduction. My guest, Dr. Corina Rogge, is the Director of Conservation at the Menil Collection in Houston, Texas and has went where few have dared to go in the research of the tintype. Cory has written multiple articles on the constituents of vintage varnish and the recipes and manufacturing methods of japan plates. Listen in and discover that sometimes, what we read in the historic texts doesn't always line up with reality when in comes to tintype recipes.