Description in Ordnance
Survey Letters by J. O’Donovan and E. Curry, 1839
Search the online photographic collection for images of O'Loughlin's Castle
On 1842 Ordnance Survey Map (using GenMaps)
On Bing maps satellite view (using GenMaps)
On Bing maps satellite view with OS Map overlay showing all monuments and enclosures (using GenMaps)
On 1842 Ordnance Survey Map (via MapBrowser)
