Circular letter of John O'Neill, "To the Officers and Members of the Fenian Brotherhood," Headquarters, Fenian Brotherhood, New York, January 21, 1870, D03779. Missouri Historical Society Library and Research Center.

Circular letter of John O'Neill, "To the Officers and Members of the Fenian Brotherhood," Headquarters, Fenian Brotherhood, New York, January 21, 1870, D03779. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/1995 Accessed September 20, 2024.