Posted by W. Miller on March 16, 2011, 3:08 am, in reply to "Folding Lantern"
As far as I know mica and isenglass are the same, some early pressure lamps used mica instead of glass too. Have you tried contacting Ashville Mica? @ www.ashevillemica.com/ they make a lot of mica products in various sizes and shapes and may be of help. Good hunting, Willis