- unitid
-
{"value"=>"172265", "type"=>"local_mss"}
{"value"=>"2.52", "type"=>"local_call"}
- unitdate
-
{"value"=>"1919", "type"=>"inclusive", "normal"=>"1919"}
- unittitle
-
{"value"=>"National Park Service"}
- physdesc
-
{"format"=>"simple", "value"=>"1"}
- scopecontent
-
{"value"=>"<p>re: bibliography of the Grand Canyon.</p>"}
- container
-
{"type"=>"box", "value"=>"2"}
- date_start
-
1919
- keydate
-
1919
- date_end
-
1919
- date_inclusive_start
-
1919
- date_inclusive_end
-
1919