Galerie de la Scala [Hélène Bucaille and Marie-Christine Carlioz]. Dessins et tableaux 1500–1900. Paris, [2001], unpaginated, no. 19, ill. (color), attribute this sketch to André Giroux and call it "Environs d'Olevano".
Esther Bell. "Catalogue Raisonné of the Thaw Collection." Studying Nature: Oil Sketches from the Thaw Collection. New York, 2011, p. 102, no. 1, ill. (color), calls it "Landscape at Olevano" and dates it 1827 or 1834–36.
