In Volume 24: Manuel Alberro, "The Celticity of Galicia and the Arrival of the Insular Celts"; Brenda Gray, "Reading Aislinge Óenguso as a Christian-Platonist Parable"; and 6 other articles. In Volume 25: Timothy P. Bridgman, "Keltoi, Galatai, Galli: Were They All One People?"; Chao Li, "On Verbal Nouns in Celtic Languages"; and 6 other articles.

This double volume includes "Retoiric and Composition in Geneamuin Chormaic," by Hugh Fogarty; "Gendering the Vita Prima: An Examination of St. Brigid's Role as 'Mary of the Gael, '" by Diane Peters Auslander; and nineteen other articles.

Proceedings of the Harvard Celtic Colloquium, 36 includes Jerry Hunter's 2016 J. V. Kelleher Lecture "The Red Sword, the Sickle and the Author's Revenge: Welsh Literature and Conflict in the Seventeenth Century." Other papers offer a wide range of articles on topics across the field of Celtic Studies.