This issue of the Proceedings of the Harvard Celtic Colloquium offers a wide range of articles on topics across the field of Celtic Studies. This volume includes the 2019 J. V. Kelleher lecture by Professor Máire Ní Mhaonaigh which centered on medieval Irish chroniclers’ conceptions of past and present events in the wider world, and the Colloquium keynote given by Prof. Barbara Hillers which studied the literary use of folklore, Irish and international, in the Irish tale of “The Vision of MacConglinne” (Aislinge Meic 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of more recent times will be articles on the Irish language in nineteenth-century American print media, and on the unpublished sequel by Muiris Ó Súilleabháin to his memoire Fiche Blian ag Fás (1933), which was published in English as Twenty Years a-Growing.