PETIG, William E. Carl and Margarethe Schurz: Their Years in Watertown, Wisconsin. Yearbook of German-American Studies, [S. l.], v. 51, p. 29–82, 2022. DOI: 10.17161/ygas.v51i.18285. Disponível em: https://journals.ku.edu/ygas/article/view/18285.. Acesso em: 18 may. 2024.