I am looking for a source for replacement glass for a Kovacs floor
lamp.  The lamp model is called Prairie Rings (#9601G) and was
designed by Robert Sonneman.  This model has not been produced since
the Kovacs company was sold a couple of years ago.  The pieces I need
are the 20 inch glass shade and the glass cylinder that covers the
halogen bulb.

A photo of the lamp can be seen at: 
http://images.homeportfolio.com/161/64466/200.jpg

Dear meshcomm, 

I have not found spare parts. However, the site you added for the
image - Home Portfolio.com - lists stores that claim to have it, by
zipcode. You could see it here:
<http://www.homeportfolio.com/catalog/Product.jhtml;$sessionid$NC0NMIIAAABD1QFIAM2CFEY?catId=457&searchText=torchiere&prodId=64455>
by clicking on "where to buy it" and adding your zipcode.