sentences:  Curtin visited Ireland on five occasions between 1871 and 1893, where he collected folkloric material in southwest Munster, the Aran Islands, and other Irish language regions with the help of interpreters.From this work he produced "Myths and Folklore of Ireland" (1890), an important source for folk material used by Yeats; "Hero Tales of Ireland" (1894); and "Tales of the Fairies and Ghost World" (1895).He also published a series of articles in "The New York Sun", later edited and republished as "Irish Folk Tales" by Séamus Ó Duilearga in 1944.