This is a poster 4th printing of the original poster from a December 9th 1966 concert by the Big Brother and the Holding Company ,featureing Janis Joplin , band Oxford Circle, and Lee Michaels at the Avalon Ballroom in San Francisco, CA. This  poster was designed by artist Victor Moscoso. Big Brother and the Holding Company were the house band at the Avalon Ballroom during this period and launched the career of their lead singer Janis Jopin who went on to become one of the biggest stars of the 1960's era music. The poster is 14 X 20 and is in mint condition. It is a great representation of the legendary San Francisco psychedelic era .that bands like Grateful Dead and Jefferson Airplane emerged from.Price includes shipping.