Albro Martin, Albro. "Crisis of Rugged Individualism: The West Shore-South Pennsylvania Railroad Affair, 1880-1885." Pennsylvania Magazine of History and Biography 93.2 (1969): 218-243. onlineDiarsipkan 2022-11-14 di Wayback Machine.
themorgan.org
"Pierpont Morgan: Banker". The Morgan Library & Museum (dalam bahasa Inggris). March 12, 2014. Diakses tanggal May 4, 2020.
Albro Martin, Albro. "Crisis of Rugged Individualism: The West Shore-South Pennsylvania Railroad Affair, 1880-1885." Pennsylvania Magazine of History and Biography 93.2 (1969): 218-243. onlineDiarsipkan 2022-11-14 di Wayback Machine.