- unitid
-
{"value"=>"3012199", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1847", "type"=>"inclusive", "normal"=>"1847"}
{"value"=>"1849", "type"=>"inclusive", "normal"=>"1849"}
- unittitle
-
{"value"=>"Hudson River Rail Road contracts"}
- container
-
{"type"=>"box", "value"=>"4"}
{"type"=>"folder", "value"=>"7"}
- date_start
-
1847
- keydate
-
1847
- date_end
-
1849
- date_inclusive_start
-
1847
- date_inclusive_end
-
1849