- unitid
-
{"value"=>"3145318", "type"=>"local_mss"}
- unitdate
-
{"value"=>"December 1958", "type"=>"inclusive", "normal"=>"1958-12"}
{"value"=>"May 1959", "type"=>"inclusive", "normal"=>"1959-05"}
{"value"=>"undated 1958", "type"=>"inclusive"}
- unittitle
-
{"value"=>"<span class=\"title\">Pagliacci</span>, Metropolitan Opera House, New York City"}
- scopecontent
-
{"value"=>"<p>Includes Mario Del Monaco, Giuseppe Valdengo, Robert Merrill, Lucine Amara, Frank Guarrera, Kurt Baum, Leonard Warren, and others</p>"}
- container
-
{"type"=>"box", "value"=>"8"}
{"type"=>"folder", "value"=>"2"}
- date_start
-
1958-12
- keydate
-
1958-12
- date_end
-
1959-05
- date_inclusive_start
-
1958
- date_inclusive_end
-
1959