Volume 1: Johann Kaspar Zeuss Grammatica celtica: e monumentis vetustis tam hibernicae linguae quam britannicae, dialecti cambricae, cornicae, armoricae, nec non e gallicae priscae reliquiis, Volume I, 1853 Volume 2: Johann Kaspar Zeuss Grammatica celtica: e monumentis vetustis tam hibernicae linguae quam britannicae, dialecti cambricae, cornicae, armoricae, nec non e gallicae priscae reliquiis, Volume II, 1853 Volume 3: Part 1: John Williams Gomer; or, A Brief Analysis of the Language and Knowledge of the Ancient Cymry, 1854 Part 2: John Jones Thomas Britannia Antiquissima; or, A Key to the Philology of History (Sacred and Profane), 1860 Volume 4: John Rhys Lectures on Welsh Philology, 1877 Volume 5: Part 1: Hermann Wilhelm Ebel Celtic Studies: from the German of Dr. Hermann Ebel, with an Introduction on Roots, Stems, and Derivatives, and on Case-endings of Nouns in the Indo-European Languages by William K. Sullivan,1863 Part 2: Whitley Stokes 'Celtic Declension' Transactions of the Philological Society, 1885-7, Part 1 (1886) Part 3: Henri d'Arbois de Jubainville Elements de la grammaire celtique: declinaison, conjugaison 1903 Volume 6: Part 1: Matthew Arnold On the Study of Celtic Literature 1867 Part 2: Donald Masson Vestigia Celtica: Celtic Footprints in Philology, Ethics, and Religion 1882 PART 3: Thomas De Courcy Atkins The Kelt or Gael: His Ethnography, Geography and Philology 1892
