Original color 14 x 20 Family Dog poster for the Grateful Dead’s two-day appearance at the Avalon Ballroom in San Francisco in 1966. This is a third print of the poster, numbered 22-3 in the lower right corner, and features superb artwork from Stanley Mouse and Alton Kelly, with an image of Frankenstein in the lower portion of the poster. In fine condition. Rolled. This design was one of the most popular of the early Family Dog posters. RR Auction COA.