- unitid
-
{"value"=>"142458", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1835", "type"=>"inclusive", "normal"=>"1835"}
{"value"=>"1855-1862", "type"=>"inclusive", "normal"=>"1855/1862"}
- date_inclusive_start
-
1835
- date_inclusive_end
-
1862
- keydate
-
1835
- unittitle
-
{"value"=>"Letters received"}
- container
-
{"type"=>"box", "value"=>"7"}
{"type"=>"folder", "value"=>"3-4"}
- date_start
-
1835
- date_end
-
1862