Etymological Dictionary of Proto-Germanic offers material collected from old and new Germanic sources, ranging from Gothic to Elfdalian, from Old English to the Swiss dialects, and incorporates several advances in Proto-Germanic phonology, morphology and derivation.
With its approximately 2,800 headwords and at least as many derivations, it covers the larger part of the Proto-Germanic vocabulary, and attempts to trace it back to its Proto-Indo-European foundations.