UNDATED (AP) – Deadheads have flooded the U.S. Mail to get tickets to the final Grateful Dead shows.

The band’s representative says more than 60,000 envelopes containing more than 350,000 ticket requests have been received as of Monday.

The Dead have a history of selling concert tickets by mail. They will perform their final shows together in Chicago in July.

Because of the overwhelming success of the mail-order program, the Dead will not do any more pre-sale tickets and the new public on-sale date has been moved from February 14 to February 28 via Ticketmaster.

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