Grateful Dead - Dave's Picks 20 Volume Twenty - University Of Colorado - Boulder, Colorado (CO) - CU Events Center - Colorado Buffaloes (CU) - December 9, 1981 (12/9/1981) - 3 CD - 2016 Grateful Dead Productions / Rhino (1981/2016) - R2-552292 - Limited Edition - Individually Numbered 3-CD Set (of # 16500) # 10444 / 16500. 1981 Grateful Dead (Jerry Garcia / Bob Weir / Phil Lesh / Bill Kreutzmann / Mickey Hart / Brent Mydland) - 12/9/81 December 9, 1981 (12/9/1981) - University Of Colorado - Boulder CU Events Center (Colorado Buffaloes) - Boulder, Colorado (CO) Brand New / Factory Sealed - Limited Edition (Individually Numbered 3-CD Set) # 10444 of 16500.