United States army officer and commissioner of agriculture. Correspondence, journals, biographical material, financial records, orders for agricultural equipment and supplies, printed matter, and photographs in physical format as well as a map in both digital and physical format. Relating chiefly to Capron's role as agricultural adviser to the Japanese government in the agricultural development of Hokkaido.

Presidential secretary, lawyer, and businessman of Washington, D.C. Correspondence relating primarily to Clark's work as a consultant on legislative, customs, and tariff matters for various business concerns, and letters from his service as secretary to President Calvin Coolidge.

Justice of the Oregon supreme court and U.S. senator from Oregon. Correspondence, speeches, memoranda, legislative files, notebooks, pamphlets, clippings, and other material relating to McNary's career as a judge and legislator.

Investment banker, financier, public official, and owner of the Washington Post . Correspondence, memoranda, minutes, diaries, oral history interviews, speeches, writings, congressional testimony, press statements, financial papers, family papers, biographical material, printed material, scrapbooks, photographs, and other papers relating to Meyer's life and career.

U.S. representative from Illinois and speaker of the U.S. Congress House of Representatives. Primarily constituent correspondence from 1934 and correspondence relating to the McNary-Haugen Farm Relief Bill of 1924.

Accountant, banker, and credit administrator. Correspondence, notes, and oral history transcripts pertaining to his book, A Challenge to U. S. Agriculture: Building the Cooperative Production Credit System.

Farmer, publicist, and U.S. assistant secretary of agriculture. Chiefly correspondence and family papers of Vrooman and members of the Vrooman and Scott family, including his wife, Julia Scott Vrooman, and her mother, Julia Green Scott.

United States senators from Montana. Official correspondence, personal correspondence, speeches, legislative files, pamphlets, newspaper clippings, scrapbooks, and photographs relating chiefly to the senatorial career of Walsh and his successor, John Edward Erickson.