Correspondence, diaries, scrapbook, photographs, and other papers relating chiefly to Meyer's service as ambassador to Italy and Russia and as U.S. postmaster general. Subjects include Cabinet meeting summaries, negotiations leading to peace after the Russo-Japanese War, and the Republican Party. Diary entries pertain to national and international events, social affairs, and Meyer (Myers) family life. Individuals represented include J.J. Jusserand, Henry Cabot Lodge, Elihu Root, and Theodore Roosevelt.