Circular letter of John O'Neill, "To the Officers and Members of the Fenian Brotherhood," Headquarters, Fenian Brotherhood, New York, August 24, 1869, D03773. 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, August 24, 1869, D03773. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/1988 Accessed September 20, 2024.