It's possible there is more at the following link, but I don't know for sure. It require a NYT 'membership'.

https://www.nytimes.com/1975/08/30/archives/eamon-de-valera-92-dies-lifelong-fighter-for-irish-de-valera.html

NB that placing the apostrophes with the first two 'well's didn't change anything regarding the search. That's all that came up other than what I presume is weerover's source:

https://visitballyhoura.com/explore/de-valeras-cottage