Old records of nursing homes locations in the 1960s - any suggestions ?

Hi, just wondering if anyone could suggest any ways I could find a list of nursing homes that were open in the east coast of Ireland in the 1960s and which might have a name of the owner or manager back then.

It's a real needle in a haystack enquiry - I'm looking for a nursing home somewhere on the east coast owned or managed by a Mrs Kiely. It was open in the period 1966 , 67, and might have been still open and operating up to 1990. But has since closed.
The only other information I have is that there was a lady called Catherine or Kathleen Lyons working there in the period 1966\67

Somebody mentioned Thoms directory, and I wonder if anyone knows if they have old editions of them in the national library ? Or old golden pages, though I don't think they will have a manager name I can cross reference it with.

Thanks if anyone might have any suggestions or ideas.