Factory Additions was the business established by Andy Warhol in 1967 for publishing and printmaking. Some of the first "Additions" include the silkscreen Marilyn Monroe portfolio, and a silkscreen Addition of "Flowers", and series of silkscreens based on his Campbell's Soup Can labels. Campbell's Soup Cans I consisted of a set of 10 silkscreens produced in an addition of 250.