Career
His key publications on Scottish Gaelic include:
(1937) The dialect of Barra in the Outer Hebrides Norsk Tidsskrift for Sprogvidenskap 8
(1940) A linguistic survey of the Gaelic dialects of Scotland. The dialects of the Outer Hebrides Oslo University Press
(1941) A linguistic survey of the Gaelic dialects of Scotland. The dialects of Skye and Ross-shire Oslo University Press.