Correspondence, letterbooks, genealogical papers, notebooks, financial records, indentures, clippings, photographs, and other papers documenting the activities of several generations of the Custis and Lee families of Virginia, who served as diplomats, statesmen, politicians, planters, and military officers during the eighteenth and nineteenth centuries.

United States army officer and civil engineer. Diaries, correspondence, maps, blueprints, newspaper clippings, biographical material, subject files, printed matter, and miscellaneous material relating to his military service during the Civil War, his personal and professional relationship with General William T. Sherman, and his career as a civil engineer in the Great Lakes region.

Sculptor Vinnie Ream and her husband, army officer and engineer Richard L. Hoxie. Correspondence, memoranda, commissions, essays, poetry by Vinnie Ream and Albert Pike, reports, notebooks, biographical data, scrapbooks, clippings, printed material, and memorabilia pertaining chiefly to Ream's work following her commission to execute the statue of Abraham Lincoln now standing in the United States Capitol rotunda.

Army officer, engineer, and parliamentarian. Diaries, memoranda books, correspondence, letterbooks, subject files, and other papers relating mainly to Robert’s service as an engineer and parliamentarian.