Columbia subject headings:
Harvard subject headings:
Burial--Ireland--Pictorial works.
Disappeared persons--Great Britain.
Disappeared persons--Ireland.
Landscape photography--Ireland.
Landscapes--Ireland--Pictorial works.
Princeton subject headings:
Burial--Ireland--Pictorial works.
Disappeared persons--Northern Ireland.
Missing persons--Ireland.
Terrorism--Northern Ireland.
Victims of terrorism--Northern Ireland.
Violence--Northern Ireland.