- unitdate
-
{"value"=>"ca. 1930s", "type"=>"inclusive", "certainty"=>"approximate", "normal"=>"1930/1939"}
{"value"=>"1940s", "type"=>"inclusive", "normal"=>"1940/1949"}
- unittitle
-
{"value"=>"Contact lists"}
- container
-
{"type"=>"box", "value"=>"12"}
{"type"=>"folder", "value"=>"1"}
- date_inclusive_start
-
1930
- date_inclusive_end
-
1949
- keydate
-
1930
- unitid
-
{"type"=>"local_mss", "value"=>"664109"}
- date_start
-
1930
- date_end
-
1949