Columbia subject headings:
Guyana--History--Sources.
Leeward Islands (West Indies)--History--Sources.
Lethem, Gordon James, Sir, 1886---Manuscripts--Indexes.
Nigeria--History--Sources.
Rhodes House Library.
Harvard subject headings:
Guyana--History--Sources.
Leeward Islands--History--Sources.
Lethem, Gordon James, Sir, 1886---Manuscripts--Indexes.
Nigeria--History--Sources.
University of Oxford. Rhodes House Library.
Princeton subject headings: