The papers document Stein's professional and scholarly work on kinetic light artist Thomas Wilfred. The majority of the collection consists of research materials on Wilfred and his art work, including scholarly and popular magazine articles, writings by Wilfred, and photographs of Wilfred's compositions and studio. Included are materials from two exhibitions of Wilfred's work that Stein curated for the Corcoran Gallery of Art in Washington, D.C. and the Museum of Modern Art in New York, New York. Finally the collection contains Stein's master's thesis on Wilfred, and professional correspondence regarding Wilfred's artwork, the exhibitions, and professional publications. Materials cover from 1914 to 2001, with the bulk from 1962 to 1972.