Speakers and Tour Guides: Update No 4 (April 2011)
The information in this Updates has been incorporated in the main Register.
Additions – Speakers
| NAME | LOCATION | CONTACT INFORMATION | TOURS | |
| Kirwan, Richard | Newcastle, Co. Dublin | 0872562390 richardkirwan1@eircom.net |
The history of the Ordnance Survey in Ireland | |