Circular letter of John O'Neill, "To the Officers and Members of the Fenian Brotherhood," Headquarters, Fenian Brotherhood, New York, October 17, 1868, D03764. 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, October 17, 1868, D03764. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/1975 Accessed September 20, 2024.