Schuchalter, Jerry. “Geld and Geist in the Writings of Gottfried Duden, Nikolaus Lenau, and Charles Sealsfield: A Study of Competing America-Paradigms”. Yearbook of German-American Studies, vol. 27, Dec. 1992, pp. 49-72, https://doi.org/10.17161/ygas.v27i.19227.