I was also at Jerry's 31st birthday at Roosevelt Stadium in Jersey City on 8/1/73. 12 days later, on 8/13/73, I got on a plane and moved to California. It was the early 70's when California was the promised land, the Dead played more often in California than in N.Y., and my mother lived in N.Y - all excellent reason to move to the West Coast!
Bill, tgo