Dia Art Foundation, in association with the National Gallery of Art, has organized the first comprehensive retrospective of works by Dan Flavin. Dan Flavin: A Retrospective, curated by former Dia Director Michael Govan and Tiffany Bell, Director of the Dan Flavin catalogue raisonné project, brings together the broad range of Flavin's art including some 45 objects and installations, most of which use the medium of fluorescent light, as well as a significant group of drawings, sketches, and collage-constructions.