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May Month
Concert poster handbill from May 1968 for shows at the Shrine Exposition Hall in Los Angeles, California. The artwork, which is a famous piece of psychedelic rock art, was designed by John Van Hamersveld for Pinnacle Productions.
The handbill functions as a calendar for various concerts that month, featuring a legendary lineup of bands:
Featured Performers

Big Brother and the Holding Company (with Janis Joplin)
The Grateful Dead
The Velvet Underground
The Yardbirds (on their final U.S. tour)
Steve Miller Band
The Chambers Brothers
B.B. King
Sons of Champlin
Pacific Gas & Electric

This particular design is highly sought after by collectors and is featured in the book The Art of Rock on page 255.
May Month - After2 (Poster)
After2
May Month - After (Poster)
After
May Month (Poster)

Procedures

poster was washed and bleached, no restoration was performed