- unitdate
-
{"value"=>"1973-1988", "type"=>"inclusive", "normal"=>"1973/1988"}
{"value"=>"1991", "type"=>"inclusive", "normal"=>"1991"}
- date_inclusive_start
-
1973
- date_inclusive_end
-
1991
- unittitle
-
{"value"=>"<span class=\"title\">Earlier American Music</span> series"}
- container
-
{"type"=>"box", "value"=>"17A"}
{"type"=>"folder", "value"=>"1"}
- unitid
-
{"type"=>"local_mss", "value"=>"426477"}
- date_start
-
1973
- date_end
-
1991
- keydate
-
1973