designs, such as the "Ball clock" (1950) and the "Hang-It-All" (1953). The "atomistic" style explodes its parts into separate, brightly colored elements, in this case the seat cushions. It was an adaptation of artist's representations of the atom, which used individual, brightly colored dots to portray atomic particles. The marshmallow sofa was produced in two lengths. The 52" version incorporates 18 cushions in a pattern of 4-5-5-4. The 103" length uses 38 cushions in a 9-10-10-9 pattern. Design attribution The Marshmallow sofa was designed in 1954 by Irving Harper. For decades the design of the Marshmallow sofa was attributed to George Nelson, as was the practice for designs coming out of George Nelson Associates, Inc. However, it was later revealed that many of the firm's designs were actually those of other designers working for the firm. John Pile, a designer who worked for George Nelson Associates, Inc. in the 1950s explained, "George's attitude was that it was okay for individual designers to be given credit in trade publications, but for the consumer world, the credit should always be to the firm, not the individual. He didn't always follow through on that policy though." As collector's items Examples of the 186 originally produced sofas routinely sell for $15,000 or more. The extremely rare 103" length is rarely offered for sale. One example, covered in white fabric and signed by Irving Harper, was sold by Sotheby's in 2000 for $37,500. In popular culture On the cover of the second volume of Spy × Family, Anya Forger is shown sitting on a Marshmallow sofa. References Couches History of furniture Modernism Individual models of furniture