- unitid
-
{"value"=>"996461", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1797-1828", "type"=>"inclusive", "normal"=>"1797/1828"}
- unittitle
-
{"value"=>"Rivers. Potomac River. Widths and soundings made by near Georgetown"}
- physdesc
-
{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"12 pages"}], "supress_display"=>true}
- container
-
{"type"=>"box", "value"=>"37"}
{"type"=>"folder", "value"=>"27"}
- date_start
-
1797
- keydate
-
1797
- date_end
-
1828
- date_inclusive_start
-
1797
- date_inclusive_end
-
1828
- extent_statement
-
12 pages