Columbia subject headings:
Iran--Boundaries--Iraq--History.
Iraq--Boundaries--Iran--History.
Harvard subject headings:
Iran--Boundaries--Iraq.
Iran--History--Sources.
Iraq--Boundaries--Iran.
Iraq--History--Sources.
Princeton subject headings:
Great Britain. Public Record Office--Archives.
India Office Library and Records--Archives.
Iran--Boundaries--Iraq--History--Sources.
Iraq--Boundaries--Iran--History--Sources.