During June of 1973 - the year the Grateful Dead got really good at being the Grateful Dead - the band played a weekend run at the gigantic RFK Stadium in the nation's capital. On day two the Dead went for nearly five hours - exploratory jams out the wazoo - including a third set sit-in by a couple of Allman Bros. The show was recorded by famed LSD manufacturer and group benefactor Owsley 'Bear' Stanley - and then dusted off fifty years later for official release by the musical gravediggers at Rhino Records.