Trays of mail are stacked up on a table covered in a psychedelic print and on the floor in front of it. Envelopes in the trays were received at the Grateful Dead Post Office Box requesting tickets to the Dead's Farewell Concert at Soldier Field in Chicago in February of 2015. Frankie Accardi-Peri, owner of GTTS TOO, received about 90,000 envelopes.