{"value"=>"1877 May 12", "type"=>"inclusive", "normal"=>"1877-05-12"}
date_inclusive_start
1877
date_inclusive_end
1877
keydate
1877-05-12
date_start
1877-05-12
date_end
1877-05-12
physdesc
{"format"=>"structured", "physdesc_components"=>[{"value"=>"autograph letter signed "}, {"name"=>"extent", "value"=>"1 page"}], "supress_display"=>true}