Letter from F. Gordon Rule to His Excellency, The Secretary of State of the Republic of Liberia, December 17, 1929
Letter from F. Gordon Rule to His Excellency the Secretary of State of the Republic of Liberia, January 16, 1930
Letter from F. Gordon Rule to His Majesty's Principal Secretary of State for Foreign Affairs, January 18, 1930
Letters from F. Gordon Rule to The Secretary of State for Foreign Affairs, London and The Secretary of State for the Republic of Liberia, December, 1929
Senate Manual Containing the Standing Rules, Orders, Laws, and Resolutions Affecting the Business of the United States Senate, Jefferson's Manual, Declaration of Independence, Articles of Confederation, Constitution of the United States, Etc.,