Bo Diddley, Jerry Garcia and Bob Weir: Saturday, March 25, 1972, Hells Angels Benefit at the Academy of Music, New York, NY. I sure feel inept not knowing more about this venue. I assume it's the one at 126 14th Street, New York, NY? I am basing that on this random bit of info I found.
Anyway, the pic is credited to photographer Chuck Pulin and accompanied a too-brief but neat piece of writing (1) about the weeklong scene (GD in residence from Tuesday, March 21, 1972 through Tuesday, March 28, 1972 before jumping off to Europe)
Haven't seen this pic before, thought I'd put it into the record.
(1) Carr, Patrick. 1972b. One Full Week Running With: Grateful Dead. Grapevine (Toronto) no. 14, May 17, 1972, p. 15.
update01: see also my "JGB 9/15/76 S.S. Duchess, New York City Harbor, New York, NY"
update02: LIA has transcribed under "March 21-28, 1972: Academy of Music, NYC"