but on the catalog record level - we have about 10% of the items cataloged (approx. 28,000 of 280,000+) in our collections management--This reply from Henry Ford Museum may be of unusual interest. They have had great institutional changes in collections. Huge amounts of material have been disposed of in their recent history and a smaller volume in different areas added to the collection. Exhibits have also changed from almost open storage such as well over a hundred vehicles lined up in rows to more typical exhibits with themes. But some areas of the main exhibit hall have not been changed.