Paul,

As you know, ADA is mostly concerned with physical accessiblity of
buildings, and accessiblity to job opportunities and public programs. It
doesn't say much about exhibits.

We can talk about making exhibits physically accessible - table heights,
wheelchair clearances etc.and the ADA guide book, among others, has that
kind of information.

As exhibit designers we can, and should go, a little father than the
guidlines require. Multiple modes of sensory input is one approach and
actually enhances the exhibit or experience for all visitors.

Check out these two books:

User Friendly Exhibits, Hands on exhibits that work by Jeff Kennedy and
New Dimensions for Traditional Diaramas, by Betty Davidson.

You are fortunate to be in Boston as one of the leaders in this area in
interactive exhibits is The Museum of Science and Betty Davidson, who
works there.  Good luck.

Joe Ruggiero.
Flandrau Science Center
Tucson