I am interested in this topic too in connection with my research on
lead glazed redware in Kentucky.  Please email responses to the list.
On a ceramic note, the Kentucky ceramic conference on March 8th has
received a great response regarding attendance.  I am planning on trying
to get electronic copies of as many of the presentations as I can, and
attempt to post copies or make them available by email if people are
interested.  Hopefully, a publication will come out of all this work.