Collector. A collection of Americana including historical letters and documents, family and personal papers, broadsides, financial and legal papers, illustrated and printed ephemera, government and legislative documents, military records, journals, and printed matter relating primarily to the expansion and development of the United States from the colonial period through the 1876 centennial.

Military supply agent and merchant. Correspondence, memoranda, accounts, purchase and delivery orders, receipts, requisitions, invoices, and other financial and mercantile records relating primarily to the distribution of food and supplies to the Continental Army in New York, New Jersey, and Connecticut.

Anglo-Irish reformer, economist, author, and inventor. Correspondence and other material documenting Frewen's activities in business ventures or government service in England, the American West, Hyderabad, Kenya, Ireland, Mexico, China, Canada, and Australia.

United States Secret Service agent. Correspondence, diaries, photographs, memorabilia, and other material relating primarily to Kennoch's career investigating 19th-century counterfeit cases and to his personal life.

Lawyer, businessman and U.S. secretary of the treasury. Correspondence, family papers, subject files, business, legal, and financial papers, speeches and writings, and miscellaneous material relating primarily to MacVeagh's service in the cabinet of William H. Taft and to the MacVeagh (McVey) and Eames families, Chicago social and civic affairs, the Franklin MacVeagh & Company wholesale grocery business, and other personal and business matters.

U.S. secretary of the treasury, banker, and financier. Primarily correspondence with some speeches, reports, and other material relating to McCulloch's career as a banker and financier, as U.S. comptroller of the currency, and as U.S. secretary of the treasury.

United States cabinet officer, diplomat, senator from Missouri, Union army officer, journalist, and reformer. Correspondence, speeches, articles, newspaper clippings, printed matter, and scrapbooks pertaining to Liberal Republicanism, tariff reduction, civil service reform, anti-imperialism, election campaigns, and the administration of Rutherford B. Hayes in which Schurz served as secretary of the interior.

Civil Service commissioner and comptroller of the currency. Correspondence, speeches, and other material.