- unitdate
-
{"value"=>"1879 Oct. - 1891 June", "type"=>"inclusive", "normal"=>"1879-10/1891-06"}
- unittitle
-
{"value"=>"Watt, A.P., and Son. Letter books. Letters (copies) to various authors and publishers, etc. Vols. Numbered on spine through XXV. Lacking vols. I, V-VI, XII, XIV, XX-XXIV. Each volume indexed at front by correspondent"}
- physdesc
-
{"value"=>"corr. In", "format"=>"simple"}
{"format"=>"structured", "physdesc_components"=>[{"value"=>"16 v", "name"=>"extent"}], "supress_display"=>true}
- date_inclusive_start
-
1879
- date_inclusive_end
-
1891
- keydate
-
1879-10
- extent_statement
-
16 v
- unitid
-
{"type"=>"local_mss", "value"=>"521550"}
- date_start
-
1879-10
- date_end
-
1891-06