Paul, A while back I obtained a copy of a publication from the Smithsonian Instution titled: Accessible Exhibitions, Testing the Reality. This has specific information on exhibit cases and accessibility. The snail mail address listed inside is: Institutional Studies Smithsonian Institution 900 Jefferson Drive, S.W. Washington D.C. 20560 I also contacted the Mid-Atlantic ADA Information Center and am currently evaluating the information I received from them, but I don't think it will have anything that is exhibit-specific. However, if you were interested in building ATMs... Their number is: 800-949-4232 Hope that helps... let me know of any other sources you obtain. Thanks. Mark C. Vang Freya Ventures [log in to unmask] 2100 Mediterranean Ave. Suite 15 Virginia Beach, VA 23451 (804) 340-0099