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James Rockwell Sheffield (August 13, 1864 – September 2, 1938) was an American attorney and Republican political figure who served in the New York State Assembly and was Ambassador to Mexico during the administration of Calvin Coolidge.
James Rockwell Sheffield (August 13, 1864 – September 2, 1938) was an American attorney and Republican political figure who served in the New York State Assembly and was Ambassador to Mexico during the administration of Calvin Coolidge.