Dear Haruhiro Tateishi, Please forgive my slowness, but I do not fully understand your question. When you say "value the museum exhibits," do you mean "place a monetary value on the objects" for insurance or other financial reasons? or do you mean "exhibit evaluation," talking to visitors to discover how they feel about the exhibit, what they learned, which elements worked well and which did not work well? I know several consultants who do visitor evaluation. For setting financial values, a registrar might give you guidance. Best wishes to you, Eugene W. Dillenburg Coordinator, Special Projects Exhibits Department The Field Museum of Natural History Chicago, Illinois 60605-2496 V: (312) 922-9410 x636 F: (312) 922-6973 E: [log in to unmask] "Never pay more than minimum wage for a shirt." -- Bruce Elliott