- unitid
-
{"value"=>"338395", "type"=>"local_mss"}
{"value"=>"33433102634346", "type"=>"local_barcode"}
- unitdate
-
{"value"=>"1861-1866", "type"=>"inclusive", "normal"=>"1861/1866"}
{"value"=>"undated", "type"=>"inclusive"}
- unittitle
-
{"value"=>"Letters sent"}
- container
-
{"type"=>"box", "value"=>"14"}
{"type"=>"folder", "value"=>"1-10"}
- date_start
-
1861
- keydate
-
1861
- date_end
-
1866
- date_inclusive_start
-
1861
- date_inclusive_end
-
1866