A pristine poster from the Grateful Dead’s first concert is up for auction, but hardcore Deadheads will have to splurge to get their hands on the historic item. The colorful hand-drawn crayon sign ...

At the time, the band was still “The Warlocks ... the poster ended up in the famed David Swartz Concert Poster Collection. Swartz, an heir to the Timberland outdoor clothing brand, was ...