ALBRECHT, H. Adolph Lewisohn (English edition): Copper Magnate in the "Gilded Age". [s.l.] : Hamburg University Press,2019. v. 13 DOI: 10.15460/HUP.MFW.13en.199. Disponível em: https://hup.sub.uni-hamburg.de/oa-pub/catalog/book/82. Acesso em: 26 apr. 2024.