Dinner party invitation

"In San Francisco in 1908, printer Henry Taylor decided to have a dinner party. He wrote and printed this poster size invitation and gave it to seven lucky friends, who are called out in the text. The rainbow roll or split-fountain technique was first used in nineteenth-century type specimen books in France and the United States. But it later became hugely popular in counterculture California, thanks to the underground tabloid The City of San Francisco Oracle in the mid- 1960s and the posters that the Colby printing company made in Los Angeles in the 1970s."—Louise Sandhaus, Earthquakes, Mudslides, Fires & Riots: California and Graphic Design 1936-1986, p 3