For designers like Mario Bellini and Massimo and Lella Vignelli, Mr. Heller produced domestic objects that became models of modern design.For designers like Mario Bellini and Massimo and Lella Vignelli, Mr. Heller produced domestic objects that became models of modern design.Read MoreInterior Design and Furnishings, Deaths (Obituaries), Design, Vignelli Associates, Design Within Reach, Heller, Alan (1940-2021), Vignelli, Massimo (1931-2014), Vignelli, Lella, Starck, Philippe, Manhattan (NYC)
