In case you wish to look up the books, the correct title is Danta Dé, compiled by Úna Ní Ógáin and Riobard Ó Duibhir
And for Londubh an Chairn you will find two versions of the compilers names Margaret Hannagan; Séamus Clanndillon aka Maighréad Ni Annagáin; Séamus De Chlanndiolúin
Londubh an Chairn has tunes in "staff and sol-fa" notation according to online catalogues.