They finally have a web page (www.jmkac.org) but just the same here is their address and telephone/fax number:

John Michael Kohler Arts Center

608 New York Avenue

P.O Box 489

Sheboygan, WI 53082-0489

U.S.A.

Tel: (414) 458 - 6144

Fax: (414) 458 - 4473

To visit the Kohler factory and to see the facility that the artist have call:

(414) 452 - 4079

The tour was Mon. - Fri. at 8:30 am and the tour is 2 1/2 hours long

 when I was there at least ;)