I have published the Irish Motor Directory 1911-12 by Henry G. Tempest.
The Directory covers all 32 Counties in Ireland and also includes six County Boroughs (Belfast, Cork, Dublin, Limerick, Londonderry & Waterford).
The Directory lists the Registration, the Owners Name & Address and whether the vehicle is a Car or Bicycle.
The Irish Motor Directory is located at the following link :
http://lurgan-ancestry.co.uk/index.php/the-irish-motor-direc... I hope this info is useful those tracing ancestors in Ireland.