All of the following collections can be downloaded for free via Google Books.
Original:
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland. London: John Murray, 1825.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland. 2nd edition. London: John Murray, 1826.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland. Revised extended edition, 3 vols. London: John Murray, 1828.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland. 3rd edition. London: John Murray, 1834.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland: A New Edition. Philadelphia: Lee and Blanchard, 1844.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland: With a short Memoir by His Son. London: William Tegg and Co., 1859.
Croker, Thomas Crofton. Fairy Legends and Traditions of the South of Ireland: New Complete Edition. Ed. Thomas Wright. London: William Tegg, 1862.
Croker, Thomas Crofton. Legends of the Lakes, or Sayings and Doings at Killarney Collected Chiefly from the Manuscripts of R. Adolphus Lynch, Esq. 2 vols. London: John Ebers and Co., 1829.
Gregory, Lady Augusta. Gods and Fighting Men. London: John Murray, 1904.
Gregory, Lady Augusta. Saints and Wonders. Dundrum: Dun Emer Press, 1906.
Gregory, Lady Augusta. The Kiltartan History Book. Dublin: Maunsel and Co, 1909.
Gregory, Lady Augusta. The Kiltartan Wonder Book. Dublin: Maunsel and Co. 1910.
Hyde, Douglas. Beside the Fire: A Collection of Irish Gælic Folk Stories. London: David Nutt, 1890.
Keightley, Thomas. The Fairy Mythology. 2 vols. London: William Harrison Ainsworth, 1828.
Keightley, Thomas. The Fairy Mythology, Illustrative of the Romance and Superstition of Various Countries: A New Edition, Revised and Greatly Enlarged. London: H. G. Bohn, 1850.
Kennedy, Patrick. The Fireside Stories of Ireland. Dublin: M’Glashan and Gill and Patrick Kennedy; London: Simpkin, Marshall and Co. and Burns, Oates and Co; Edinburgh: John Menzies and Co., 1870.
Lover, Samuel. Legends and Stories of Ireland. Dublin: W. Wakeman, 1831.
Thoms, William John. Lays and Legends of Various Nations Illustrative of their Traditions, Popular Literature, Manners and Superstitions: Lays and Legends of Ireland. London: George Cowie, 1834.
Wilde, Lady Jane Francesca (Speranza). Ancient Legends, Mystic Charms, and Superstitions of Ireland. 2 vols. Boston: Ticknor and Co., 1887.
Yeats, W. B. Fairy and Folktales of the Irish Peasantry. London: Scott, 1888.
Yeats, W. B. Irish Fairy Tales. London: T. Fisher Unwin, 1892.
German Translations:
Croker, Thomas Crofton. Irische Elfenmärchen. Trans. (into German) Jacob and Wilhelm Grimm. Leipzig: Fleischer, 1826.
French Translations:
Croker, Thomas Crofton. Contes Irlandais, précédés d’une Introduction par M. P. A. Dufaur. Trans. (into French) M. P. A. Dufaur. 2 vols. Paris: Moutardier Libraire, 1828.