Swank, J. M. (1908). Progressive Pennsylvania: A record of the remarkable industrial development of the Keystone state, with some account of its early and its later transportation systems, its early settlers, and its prominent men. Philadelphia: J. B. Lippincott company.

Swank, James Moore. Progressive Pennsylvania: A Record of the Remarkable Industrial Development of the Keystone State, With Some Account of Its Early and Its Later Transportation Systems, Its Early Settlers, and Its Prominent Men. Philadelphia: J. B. Lippincott company, 1908.

Swank, James Moore. Progressive Pennsylvania: A Record of the Remarkable Industrial Development of the Keystone State, With Some Account of Its Early and Its Later Transportation Systems, Its Early Settlers, and Its Prominent Men. Philadelphia: J. B. Lippincott company, 1908.