lower left in graphite: A/P BUILDING IN SPACE; lower right in graphite: Drewes 1938
(Tobey C. Moss Gallery, Los Angeles, California); Corcoran Gallery of Art, Washington, DC, 1994; acquired 2015 by the National Gallery of Art
- Rose, Ingrid. Werner Drewes: A Catalogue Raisonné of His Prints. Munich and New York: Verlag Kunstgalerie Esslingen, 1984, sec. III, p. 317, no. 105.