- unitdate
-
{"value"=>"1850", "type"=>"inclusive", "normal"=>"1850"}
{"value"=>"1868", "type"=>"inclusive", "normal"=>"1868"}
- date_inclusive_start
-
1850
- date_inclusive_end
-
1868
- unittitle
-
{"value"=>"Letters sent"}
- container
-
{"type"=>"box", "value"=>"3"}
{"type"=>"folder", "value"=>"3"}
- unitid
-
{"type"=>"local_mss", "value"=>"516443"}
- date_start
-
1850
- date_end
-
1868
- keydate
-
1850