Líon alt a bhfuil an ghné seo luaite iontu: 4
While I was in the Gaeltacht in 1930 I was so much impressed with his forthright character and with his ability as a teacher of Irish that upon returning to Bonn, Germany, where I then was one of the editors of Hessen’s Irish lexicon, I made arrangements to have him come to Bonn in order that he might not only pursue his Celtic studies under Professor Rudolf Thurneysen[B4] there, but also might become a co-worker on the dictionary.’ I 1931 bhuaigh sé scoláireacht taistil Ollscoil na hÉireann agus lean air in Bonn go 1933, é ag staidéar ar an tSean-Ghaeilge, ar an bhfileolaíocht chomparáideach, ar an Sanscrait, an tSean-Ioruais, gach tréimhse den Ghearmáinis, an Ghréigis agus na seanteangacha eile agus na hábhair eile is suim le fileolaithe ··· Ar feadh 1933-34 bhí sé ina mhac léinn taighde i gColáiste Ollscoile Chorcaí, é ag gabháil do chúrsa Ph.D.; is i ngeall ar chuid den soláthar a rinne sé i gcomhair Hessen’s Irish lexicon a ghnóthaigh sé a chéim dochtúra ··· Luaitear leis scéalta ón mbéaloideas in Lia Fáil i 1929 agus 1931, na litreacha R agus S in Hessen’s Irish lexicon , cúpla alt faoin ogham i gcomhpháirt le M.J
Both editors and publishers of Hessen’s Irish Lexicon deserve the warm thanks of all who are interested in Irish studies for the effort they are making to supply the student and general reader of Old and Middle Irish literature with an adequate dictionary ··· It may be some requital to them for the labour they have expended upon the Lexicon to know that, if the first fasciculus is a fair specimen of what is to follow, the completed work will indeed be a highly satisfactory work for the student and general reader, and will moreover be of considerable help to the research worker.’ I 1939 dúirt sé: ‘But what is remarkable about every fascicle of Hessen’s Lexicon, including the fascicle under review, is the fullness, concision and accuracy of almost all its articles.’ Níor foilsíodh ach an dá imleabhar.
Bhí sé ar dhuine de thiomsaitheoirí agus d’eagarthóirí Hessens Irisches Lexicon
Ó 1933 amach bhí sé páirteach san obair ar Hessens Irische Lexikon