EJ - you must check out "Festival" when it is released on DVD.   I was a bit too young to go to Newport during it's heyday, but watching the film was an eye-opener.   "Festival" was an amazing documentary, and you can see that the film makers who created "Woodstock" were using "Festival" as a "how-to" guide in many ways. Not the crazy cuts, but the intermixing of music with audience and performer dialogue. It really does give modern viwers an opportunity to see what really went on.

Also, I highly recommend the episodes of "Rainbow Quest" that Shanachie has released on DVD. This was a series that Pete Seeger hosted during the mid-1960's.   I've watched episodes with the Clancy Brothers & Tommy Makem, Johnny Cash & June Carter Cash, and a few others. Another wonderful glimpse of how folk music was really offered during the time.