- unitid
-
{"value"=>"3145381", "type"=>"local_mss"}
- unitdate
-
{"value"=>"May 1959", "type"=>"inclusive", "normal"=>"1959-05"}
{"value"=>"May 1962", "type"=>"inclusive", "normal"=>"1962-05"}
{"value"=>"undated 1959", "type"=>"inclusive"}
- unittitle
-
{"value"=>"Unspecified location"}
- scopecontent
-
{"value"=>"<p>Includes Jan Peerce, Calvin Marsh, George London, Mario Del Monaco, Dorothy Kirsten, Ljuba Welitsch, Leonard Warren, Licia Albanese, Eleanor Steber, Richard Tucker, Delia Rigal, and others</p>"}
- container
-
{"type"=>"box", "value"=>"9"}
{"type"=>"folder", "value"=>"2"}
- date_start
-
1959-05
- keydate
-
1959-05
- date_end
-
1962-05
- date_inclusive_start
-
1959
- date_inclusive_end
-
1962