Montgomery Gallery: Gallery American and European 19th and 20th Century Works of Art with a special focus on the art of California Gallery Montgomery Gallery is the leading international art gallery in San Francisco specializing in nineteenth and twentieth century European and American painting with a focus on the art of California. Founded in 1984 in San Francisco, Montgomery Gallery has devoted itself to achieving excellence in the art world. Over the past twenty-five years the gallery has established a reputation as a premier art institution that provides both buyers and sellers with an unparalleled level of connoisseurship, scholarship, and personal service.