An article (also here and here) announcing that, due to budget constraints, the state of Illinois is closing the Frank Lloyd Wright designed Dana-Thomas House, which is one of Wright's most significant sites in terms of its stained glass. (Wikipedia entry on Dana-Thomas House) The articles state that there are 250 pieces of 'art-glass' in the house.
this one from Flickrite lancer 617
I hope they find a way to re-open this house. If there is one site that should be open as a prime example of Wright's use of stained glass, this is it.
[update April 17, 2009 - Good News! - Dana-Thomas set to re-open soon]