A report on the Grateful Dead Concert in the “Grateful Dead Guide“: http://deadessays.blogspot.com/2013/02/may-3-1970-wesleyan-university.html
This appears to be another edit of the recording: https://www.youtube.com/watch?v=en7CmmweLZU
Seen in the comments of this version:
“The Grateful Dead – Live at Wesleyan”: https://www.youtube.com/watch?v=en7CmmweLZU
“Vintage New Riders footage from Wesleyan University May 3, 1970”: https://www.youtube.com/watch?v=Xh4-2Vf924M