This volume of the Proceedings of the Harvard Celtic Colloquium offers a wide range of articles on topics across the field of Celtic Studies. It includes the Colloquium keynote given by Prof. Barbara Hillers which studied the literary use of folklore, Irish and international, in the Irish tale “Aislinge Meic Con Glinne” (“The Vision of Mac Con Glinne”). More recent literary topics expand the scope of this volume from the medieval into the early modern period, and into the early twentieth century. Of special interest to scholars of more recent times will be articles on the Irish language in nineteenth-century American print media, and on the unpublished sequel by Muiris Ó Súilleabháin to his memoir Fiche Blian ag Fás (1933), which was published in English as Twenty Years a-Growing.