I see the name Pete Seeger and the first thing I think of is his taking a hatchet to cut Dylan's electrical supply when he 'went electric' at Newport in 1965. I've always disliked Seeger for that. turns out the story may have been apocryphal:
Seeger's HUAC testimony.
Nice documentary about the Weavers and the whole black list business. If you have the time and don't mind the subtitles.
These are all pretty damn good.