Lawyer and army officer. Correspondence, diaries, biographical material, genealogical notebooks, legal and business papers, scrapbooks, photographs, memorabilia, and other papers relating to the family of Charles Ewing during and after the Civil War.

United States Army officer, engineer, and ordnance expert. Correspondence, travel and other diaries and journals, and miscellaneous papers of Mordecai and his family.

Cuban-American lawyer and writer. Correspondence, legal papers, notes, drafts, and other literary papers, newspaper clippings, and miscellany relating to his work before various Latin American claims commissions and other legal work involving Latin American governments, and materials pertaining to his writings on Latin American history.