There is a company in North Carolina that sells sheets of mica. Contact the Tar Heel Mica Co., P.O. Box 8, Plumtree, NC 28664. Phone 704-765-4535.Tell them what your needs are and perhaps they can help. For more information on this product and the company, see the magazine Fine Homebuilding, January 1990 issue, page 96. Let everyone know where you finally find the product you're looking for! In article <[log in to unmask]>, Kari Laurent <[log in to unmask]> wrote: > Does anyone have a source for eisenglass? I'm told it's a type of plastic > used in the "windows" of old cast iron woodstoves. > > Kari Laurent, Collections Manager > Cave Creek Museum, Cave Creek, AZ