- unitid
-
{"value"=>"279338", "type"=>"local_mss"}
{"value"=>"EM. 12928", "type"=>"local_emmet"}
- unitdate
-
{"value"=>"Apr. 6, 1839", "type"=>"inclusive", "normal"=>"1839-04-06"}
- unittitle
-
{"value"=>"Letter to Appleton & Co. [New York]"}
- physdesc
-
{"value"=>"A. L. S. 1 page. Fo", "format"=>"simple"}
- abstract
-
{"value"=>"Concerning the publication of an illustrated work, then just completed, printed by Chambers."}
- date_inclusive_start
-
1839
- date_inclusive_end
-
1839
- keydate
-
1839-04-06
- date_start
-
1839-04-06
- date_end
-
1839-04-06