If you missed the Newport Jazz Festival, NPR Music has great live recordings from the whole weekend, including Doris Duke Artists John Hollenbeck and The Claudia Quintet and Bill Frisell with The Bad Plus!
Oscar-Winner Murray Lerner, Who Documented Bob Dylan Going Electric at Newport, Dies at 90
"... Lerner’s significant contribution to documentary filmmaking included recording historic footage of Bob Dylan going electric at the 1965 Newport Jazz Festival and Jimi Hendrix and The Doors giving their last major performances in 1970 at the Isle of Wight Festival...."
The Newport Jazz Festival started in 1954 and ended in 1972 after many years of crowds getting out of control. Police, National Guard and riots could be counted on as well as the top bands at the time from Billie Holiday in the 50's to Led Zeppelin & The Allman Brothers Band. I remember the tear gas and demonstrators at the Bristol Parade in 72 also. Those were wild times.