- unitid
-
{"value"=>"2112042", "type"=>"local_mss"}
{"value"=>"33433095908012", "type"=>"local_barcode"}
- unitdate
-
{"value"=>"[1860] January 17", "type"=>"inclusive", "normal"=>"1860-01-17", "certainty"=>"inferred"}
- unittitle
-
{"value"=>"Martin Van Buren to William B. Lewis"}
- physdesc
-
{"format"=>"simple", "value"=>"Dated 1856 January 17 by Van Buren, endorsed 1860 January 17"}
- container
-
{"type"=>"volume", "value"=>"4"}
- date_start
-
1860-01-17
- keydate
-
1860-01-17
- date_end
-
1860-01-17
- date_inclusive_start
-
1860
- date_inclusive_end
-
1860