Kluge = Etymologisches Wörterbuch der deutschen Sprache. Friedrich Kluge. Strassburg. 1894.
Richthofen (or O. F.) = Altfriesisches Wörterbuch, von Karl Freiherrn von Richthofen. Göttingen. 1840.
Rietz (or Sw. dial.) = Svenskt Dialekt-Lexikon. J.E. Rietz. Malmö. 1867.
Ross = Norsk Ordbog. Tillæg til Ivar Aasen's Ordbog. Hans Ross. Christiania. 1895.
Schiller und Lübben = Mittelniederdeutsches Wörterbuch. Bremen. 1875-1880. Cited as M.L.G.
Schlyter = Glossarium til Skånelagen (Sveriges Gamle Lagar IX.). C.J. Schlyter. Lund. 1859.
O.S. = Old Saxon. Schmellers Glossarium Saxonicum e Poemate Heliand. Tübingae. 1840.
Sievers = Altenglische Grammatik. Eduard Sievers. 3 Auflage. 1898.
Skeat = Etymological Dictionary of the English Language. Oxford. 1882; and Concise Etymological Dictionary. Oxford. 1897.
Skeat's list = A List of English Words, the Etymology of which is illustrated by Comparison with Icelandic. W.W. Skeat. Oxford. 1876.