Here are the details for the Seamus Ennis story:

First broadcast as a four part series in the 'Airmeán' programme on RTE radio 1 in spring 1988, presented by Peter Browne and produced by Julian Vignoles. Sold as a double cassette RTE MC115 by RTE.

These programmes used some material taken from broadcasts by Ennis, mainl;y one he produced about his own life. The programmes I linked above made extensive use of the material from this series as well as the older material.

I made a scan of the cover of the cassettes and meant to put it on an image hosting site but am gettign server errors at the moment. I can try later, if anyone is interested.