- unitid
-
{"value"=>"2060487", "type"=>"local_mss"}
{"value"=>"33433116966429", "type"=>"local_barcode"}
- unitdate
-
{"value"=>"1965", "type"=>"inclusive", "normal"=>"1965"}
{"value"=>"1973", "type"=>"inclusive", "normal"=>"1973"}
- unittitle
-
{"value"=>"Metropolitan Opera"}
- container
-
{"type"=>"box", "value"=>"14"}
{"type"=>"folder", "value"=>"23-25"}
- date_start
-
1965
- keydate
-
1965
- date_end
-
1973
- date_inclusive_start
-
1965
- date_inclusive_end
-
1973