- unitid
-
{"value"=>"39654", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1874 Oct", "type"=>"inclusive", "normal"=>"1874-10"}
{"value"=>"1875 Feb - May", "type"=>"inclusive", "normal"=>"1875-02/1875-05"}
- unittitle
-
{"value"=>"Greenwich Elevated Railroad"}
- container
-
{"type"=>"box", "value"=>"32"}
{"type"=>"folder", "value"=>"14"}
- date_inclusive_start
-
1874
- date_inclusive_end
-
1875
- keydate
-
1874-10
- date_start
-
1874-10
- date_end
-
1875-05