Editing Widener Library (section)

===Departmental and special libraries===
[[File:HarvardCollegeLibrary CatalogCardC.jpg|right|thumb|upright=1.1|[[Library catalog|Catalog card]]. In the "Harvard system", ''C'' denotes Church History and Theology.]]

The building also houses a number of special libraries in dedicated spaces outside the stacks, includ{{shy}}ing:
{{columns-list|colwidth=23em|
* The [[Fred N. Robinson]] [[Celtic studies|Celtic]] Seminar Library
* The [[Hamilton A.R. Gibb]] [[Islamic studies|Islamic]] Seminar Library
* The [[Milman Parry]] Collection of [[Oral Literature]]
* The [[Herbert Weir Smyth]] {{nobr|[[classics|Classical]] Library}}
* The [[Francis James Child]] Memorial Library {{nobr|(English Department)}}
* The [[James A. Notopoulos]] Collection of {{nobr|[[Modern Greek]] Ballads and Songs}}
}}
There are also special collections in the [[history of science]], [[Linguistics|linguis{{shy}}tics]], [[Near East]]ern languag{{shy}}es and civiliza{{shy}}tions, [[Palaeography|paleogra{{shy}}phy]], and [[Sanskrit]].{{r|special}}

The contents of the Treasure Room, holding Harvard's most precious rare books and manuscripts (other than the Harry Elkins Widener Collection itself) were transferred to newly built [[Houghton Library]] in 1942.{{r|houghton_chron|p=15}}