- unitid
-
{"value"=>"[MAI-9461]", "type"=>"local_call"}
{"value"=>"1141299", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1953 November 20-1973 December 24", "type"=>"inclusive", "normal"=>"1953-11-20/1973-12-24"}
{"value"=>"undated", "type"=>"inclusive"}
- date_inclusive_start
-
1953
- date_inclusive_end
-
1973
- keydate
-
1953-11-20
- date_start
-
1953-11-20
- date_end
-
1973-12-24
- unittitle
-
{"value"=>"<name>Helm, Everett B.</name>, Letters"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"7 letters"}], "supress_display"=>true}
- container
-
{"type"=>"folder", "value"=>"532"}
- extent_statement
-
7 letters