Nanna Ditzel Knoll International Center Table, 1967

Nanna Ditzel was the most versatile and creative female designer that Denmark produced in the 20th century. Ditzel brought her talents to bear on a staggering array of forms — she designed furniture, jewelry, tableware and textiles; and she shaped her pieces using an equally astonishing variety of materials, from wood and wicker to silver, ceramics and fiberglass.

Born in Copenhagen, she trained as a cabinetmaker at the Royal Academy's furniture school — overseen by the great craftsman of the day, Kaare Klint — and graduated in 1943. Ditzel’s early work adhered to the classic Danish modernist tenets of simplicity, comfort and quality, and her armchairs, with their softly curved backrests are much in the spirit of Hans Wegner. Ditzel’s signature piece of that time is her Ring chair. Designed along with her husband, Jørgen Ditzel, a fabric maker, the chair has a semicircular padded armrest that seems to embrace the sitter. Ditzel began designing in wicker and in 1959 produced the Hanging chair. The piece, suspended from the ceiling by a chain, became a favorite for fashion shoots and may be as iconic of the 1960s as Eero Aarnio’s plastic Ball chair of 1963.

In 1956, Ditzel began designing for the Danish silverware firm Georg Jensen. In an association that lasted some 40 years, Ditzel would create organically shaped jewelry, barware, ceramic tableware and even tablecloths. Like her fellow Dane Verner Panton, Ditzel was not afraid to embrace industrial materials, and she began designing fiberglass chairs in the mid-1960s. Some of her most flamboyant work came toward the end of her career, in pieces such as 1989’s Bench for Two, with its shocking Op-art finish, or the Trinidad chair of 1992, with it’s sunburst-like, cut-though backs. Such feats of creativity were a fitting coda to one of the most imaginative, prolific and remarkable women of modern design.

As a company that produced many of the most famous and iconic furniture designs of the 20th century, Knoll was a chief influence in the rise of modern design in the United States. Led by Florence Knoll, the firm would draw stellar talents such as Ludwig Mies van der Rohe and Eero Saarinen into its compass. Their work would help change the face of the American home and office.

The company was formed in 1938 by the German immigrant Hans Knoll. He first worked with his fellow ex-pat, the Danish designer Jens Risom, who created furniture with flowing lines made of wood. While Risom served in World War II, in 1943 Knoll met his future wife, Florence Schust. She had studied and worked with eminent emigré leaders of the Bauhaus, including Mies, Walter Gropius and Marcel Breuer. She won Knoll over with Bauhaus notions of industrial arts, and an aesthetic that featured flat and tubular metal frames and angular forms. When Hans died in a car crash in 1955, Florence Knoll was appointed head of the company. It was as much through her holistic approach to design — a core division of the firm was dedicated to planning office systems — as Knoll's mid-century modern furnishings themselves that she brought about the sleek and efficient transformation of the American workplace.

Today, classic Knoll furnishings remain staples of modern design collections and decor. A history of modern design is written in pieces such as the elegant Barcelona chair — created by Mies and Lilly Reich — Saarinen’s pedestal Tulip chair, Breuer’s tubular steel Wassily lounge chair and the grid-patterned Diamond chair by Harry Bertoia.

As you can see from the collection of these designs and other vintage Knoll dining chairs, sofas and tables on 1stDibs, this manufacturer's offerings have become timeless emblems of the progressive spirit and sleek sophistication of the best of modernism.