Can anyone recommend a good comparative grammar of the Germanic languages -- or, failing that, good historical grammars specifically for Old English and Old Norse?
Ideally, what I want is a historical grammar that gives a comparative overview of the Germanic languages from the Proto-Germanic period (or even from PIE). But since I'm mostly interested in Old English and Old Norse, specific historical grammars for those languages would be useful too. Preferably written in English, but any western European language is good.
I have Prokosch's Comparative Germanic Grammar, but it's from 1939, and is obviously idiosyncratic in some of its views even for that period. I've read Ringe's recent monograph on Proto-Germanic, but that doesn't (yet) go beyond the PGmc stage. Suggestions?