Tiles production info

Paydirt: A good soul sent a comment that includes a link to an article about a William Ittner school in Springfield, IL that has tiles.

Here is the link: http://www.shs.springfield.k12.il.us/features/History/pottery/index.html

The article leads to the Moravian Tile Works in Doylestown, PA, historic from the Craftsman era and still operating.