- unitid
-
{"value"=>"3340823", "type"=>"local_mss"}
{"value"=>"TLP 0134", "type"=>"local_call"}
- unitdate
-
{"calendar"=>"gregorian", "certainty"=>"inferred", "era"=>"ce", "type"=>"inclusive", "value"=>"[Watermark = 1834]"}
- unittitle
-
{"value"=>"Holograph essay (fragment), \"American Steam Navigation\""}
- physdesc
-
{"format"=>"simple", "value"=>"3 pages (double sheet)"}
- physloc
-
{"value"=>"SC File"}
- scopecontent
-
{"value"=>"<p>[No place] : begins, : \"The western rivers of America have been the field on which steam navigation has most impressively developed its powers ...\"</p>"}