- unitid
-
{"value"=>"3357933", "type"=>"local_mss"}
- unitdate
-
{"value"=>"1940", "type"=>"inclusive", "normal"=>"1940"}
- unittitle
-
{"value"=>"<span class=\"title\">History of the American Derby</span>, Washington Park Jockey Club"}
- scopecontent
-
{"value"=>"<p>Inscribed to Buster Miller from Ted Williams</p>"}
- container
-
{"type"=>"box", "value"=>"2"}
{"type"=>"volume", "value"=>"5"}
- date_start
-
1940
- keydate
-
1940
- date_end
-
1940
- date_inclusive_start
-
1940
- date_inclusive_end
-
1940