Original 1967 San Francisco psychedelic concert poster designed by Victor Moscoso, advertising a Family Dog-presented show at the legendary Avalon Ballroom, featuring The Grass Roots and Brother & The Holding Company. Victor Moscoso is one of the most influential artists of the San Francisco psychedelic poster movement, known for his bold color fields, optical effects, and photographic collage techniques. This poster dates to the height of the Summer of Love and is a classic example of his innovative visual style. Artist: Victor Moscoso. Bands: The Grass Roots; Brother & The Holding Company. Venue: Avalon Ballroom, San Francisco. Promoter: Family Dog Presents. Date: June 1967. Printer: San Francisco Poster Company. Size: approximately 14 x 20 inches. Medium: Offset lithograph on paper. Poster presents very well with strong visual impact. Light age-appropriate wear may be present. Please review all photos carefully, as they are part of the description. Authentic period printing – not a reproduction. Classic Avalon Ballroom / Family Dog poster. Highly collectible Victor Moscoso design.