Authentic purple vinyl George Nelson Marshmallow sofa in excellent condition.

Architect, designer, and writer George Nelson was a central figure in the mid-century American modernist design movement; and his thoughts influenced not only the furniture we live with, but also how we live.

Nelson came to design via journalism and literature. Upon receiving his bachelor’s degree in architecture from Yale in 1931, he won the Prix de Rome fellowship, and spent his time in Europe writing magazine articles that helped bring stateside recognition to Ludwig Mies van der Rohe, Gio Ponti, Le Corbusier and other canonical modernist architects. In the 1940s, Nelson wrote texts that suggested such now-commonplace ideas as open-plan houses, storage walls and family rooms. D.J. De Pree, the owner of the furniture maker Herman Miller, was so impressed by Nelson that in 1944 — following the sudden death of Gilbert Rohde, who had introduced the firm to modern design in the 1930s — he invited Nelson to join the company as its design director.

There Nelson’s curatorial design talents came to the fore. To Herman Miller he brought such eminent creators as Charles and Ray Eames, Isamu Noguchi, and the textile and furniture designer Alexander Girard. Thanks to a clever contract, at the same time as he directed Herman Miller he formed a New York design company, George Nelson & Associates, that sold furniture designs to the Michigan firm, as well as its competitor, the Howard Miller Clock Company. Nelson’s New York team of designers (who were rarely individually credited) would create such iconic pieces as the Marshmallow sofa, the Coconut chair, the Ball clock, the Bubble lamp series and the many cabinets and beds that comprise the sleek Thin-Edge line.

For dedicated collectors, as well as for interior designers who look beyond “the look,” there is a “cool-factor” inherent to vintage pieces from George Nelson and others. Nelson was in on it from the start, and it’s valuable to have a piece that was there with him. But still, as is evident from the offerings from dealers on these pages, in any of the designs, in any iteration whose manufacture Nelson oversaw and encouraged, there are shining elements of lightness, elegance, sophistication — and a little bit of swagger. George Nelson felt confident in his ideas about design and didn’t mind letting the world know.

No other business of its kind did more than the Herman Miller Furniture Company to introduce modern design into American homes. Working with legendary designers such as Charles and Ray Eames, George Nelson and Alexander Girard, the Zeeland, Michigan-based firm fostered some of the boldest expressions of what we now call mid-century modern style. In doing so, Herman Miller produced some of the most beautiful, iconic and, one can even say, noblest furniture ever.

Founded in 1923, Herman Miller was originally known for grand historicist bedroom suites: heavily ornamented wood furniture that appealed to a high-minded, wealthier clientele. The company — named for its chief financial backer — began to suffer in the early 1930s as the Great Depression hit, and D.J. De Pree, the company’s CEO, feared bankruptcy. In 1932, aid came in the form of Gilbert Rohde, a self-taught furniture designer who had traveled widely in Europe, absorbing details of the Art Deco movement and other modernist influences. After persuading De Pree that the growing middle-class required smaller, lighter household furnishings, Rohde set a new course for Herman Miller, creating sleek chairs, tables and cabinetry that were the essence of the Streamline Moderne style.

Rohde died suddenly in 1944. The following year, De Pree turned to George Nelson, an architect who had written widely about modern furniture design. Under Nelson’s leadership, Herman Miller would embrace new technologies and materials and audacious biomorphic forms. Some of the pieces the company produced are now emblems of 20th century American design, including the Eames lounge chair and ottoman and Nelson’s Marshmallow sofa and Coconut chair. As you can see on 1stDibs, such instantly recognizable furnishings have become timeless — staples of a modernist décor; striking, offbeat notes in traditional environments.