Ordnance Survey of Northern Ireland 1:50,000 map.
Belfast : Ordnance Survey of Northern Ireland,
1979-84.
Sheet 4. Coleraine (1979) -- Sheet 5. Ballycastle (1982) -- Sheet 7. Londonderry (1984) -- Sheet 8. Ballymoney (1980) -- Sheet 9. Larne (1979) -- Sheet 14. Lough Neagh (1982) -- Sheet 15. Belfast (1982) -- Sheet 19. Armagh (1984) -- Sheet 20. Craigavon (1984) -- Sheet 21. Strangford Lough (1984) -- Sheet 29. The Mournes (1984).