I am currenty working on the restoration of a national landmark house museum
here in Chicago.  A major portion of the wood double-hung window restoratinon
program is the need to reduce the UV radiation into the museum spaces.  I have
received literature from a number of interior storm window manufacturers, and
am reading up as much as I can on this issue.

I am interested in hearing from others about how you approached this problem.
Did you go with Lexan, or Low-E glass, or film, etc.?  If interior "storms"
are used, how was condensation in the winter (big issue in Chicago)?  Also,
with interior storms, doesn't it obliterate the view of the beautifully
restored sash?

Hopefully some of these issues will be discussed at the joint Museums / AIA
HRC / APT conference this weekend in Williamsburg.

Thanks
Anne Sullivan