The Dayton's have moved once again, this time to

  G. Roger Dayton
  122 Bradley Blvd.
  Greenville, SC 29609-5033
  tel.: 864-292-6442

The Batavia, Illinois, address was an actual store/museum and it was
closed five or six years ago.  More's the pity but what can't be cured
must be endured, Roger says.  He is retired but you can't keep a good
man down.  Hope this helps.

Jerry F. Bacon
Dallas, Texas