The first twoday Bluegrass Festival took place in 1965. It is fantastic, that there are 2 videos from this first festival, with many of the Bluegrass bands popular in 1965:
First Bluegrass Festival Fincastle Virginia 1965 featuring Don Reno
Clip from the first bluegrass festival in Fincastle Virginia from 1965 featuring Don Reno, Bill Monroe, Mac Wiseman, and Benny Martin
First Bluegrass Festival Fincastle VA. 1965
Historic footage of the first multi-day bluegrass festival held in Fincastle Va. on Labor Day Weekend September 3, 4, 5, 1965
More information about the first Bluegrass Festival with original photos can be found on the homepage of Phil Zimmerman: http://www.bluegrasstime.com/
See also:
More posts about Bill Monroe in my blog
More about Bluegrass history with many picture (Amazon partnerlink):