As I remember, this was a discussion some months ago on this
list. You can search the archives at http://home.ease.lsoft.com/archives/museum-l.html.
Steven Eichner, Research Analyst and List Manager
Association of Science-Technology Centers Inc., Washington, DC
email: [log in to unmask]; web: http://www.astc.org
ph: 202/783-7200x130; fax: 202/783-7207