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- Udall, Stewart L.--Correspondence.
- Uhrbrock, Mildred G.
- Ulam, Stanislaw M.
- Ulio, James Alexander, 1882-1958--Correspondence.
- Ulmer, S. Sidney--Correspondence.
- Underwood, Oscar Wilder, 1862-1929--Correspondence.
- Unesco.
- Union Congregational Church (Magnolia, Mass.).
- Union Pacific Railroad Company.
- Union Station (Washington, D.C.).
- Union Turnpike (Maryland).
- United Board for Christian Higher Education in Asia.
- United Brewers Industrial Foundation.
- United China Relief (U.S.).
- United Company of Philadelphia for Promoting American Manufactures.
- United Fruit Company.
- United Methodist Church (U.S.).
- United Nations.
- United Nations--Armed forces.
- United Nations Blockade and Escort Force.
- United Nations. Charter.
- United Nations Conference on International Organization (1945 : San Francisco, Calif.).
- United Nations--History.
- United Nations--Officials and employees, American.
- United Nations Relief and Rehabilitation Administration.
- United Nations. Security Council.
- United Nations. Special Committee on the Balkans.
- United Presbyterian Church in the U.S.A. Fifty Million Fund.
- United Press International.
- United Restitution Organization.
- United Service to China.
- United Shoe Workers of America.
- United States. Advisory Commission on Information.
- United States Advisory Commission on International Educational and Cultural Affairs.
- United States. Advisory Committee on the Future of the U.S. Space Program.
- United States. Agricultural Adjustment Administration.
- United States. Air Force.
- United States Air Force Academy.
- United States. Air Force--Correspondence.
- United States. Air Force--Officers.
- United States and Mexican Claims Commission.
- United States. Anthracite Coal Strike Commission.
- United States Anti-Communist Congress.
- United States. Armed Forces--Drill and tactics.
- United States. Armed Forces--Reorganization.
- United States. Arms Control and Disarmament Agency.
- United States. Army.
- United States. Army--African American troops.
- United States. Army. Air Corps.
- United States. Army. Air Corps--Foreign service--Philippines.
- United States. Army. Air Corps--Officers.
- United States. Army Air Forces.
- United States. Army Air Forces. Air Force, 8th.
- United States. Army Air Forces. Bomber Command, 8th.
- United States. Army Air Forces--Officers.
- United States. Army. Air Service.
- United States. Army. Airborne Division, 82nd.
- United States. Army. American Expeditionary Forces.
- United States. Army. American Expeditionary Forces--Chaplains.
- United States. Army. Artillery.
- United States. Army. Cavalry.
- United States. Army--Chaplains.
- United States. Army. Connecticut Infantry Regiment, 14th (1862-1865).
- United States. Army. Corps, 5th (1862-1865).
- United States. Army. Corps of Engineers.
- United States. Army. Corps of Engineers. Regiment, 357th.
- United States. Army. Corps, Sixth.
- United States. Army. Corps, Third.
- United States. Army. Dept. of the South.
- United States. Army. Dept. of the Tennessee.
- United States. Army--Equipment.
- United States. Army--Foreign service--Europe.
- United States. Army--Foreign service--Iran.
- United States. Army--Foreign service--Japan.
- United States. Army--Foreign service--Philippines.
- United States. Army--History.
- United States. Army--History--19th century.
- United States. Army--History--Civil War, 1861-1865.
- United States. Army--History--Punitive Expedition into Mexico, 1916.
- United States. Army--History--War of 1812.
- United States. Army. Illinois Infantry Regiment, 51st (1861-1865).
- United States. Army. Illinois Infantry Regiment, 72nd (1862-1865).
- United States. Army. Indiana Cavalry Regiment, 1st (1861-1864).
- United States. Army. Indiana Cavalry Regiment, 3rd (1861-1865).
- United States. Army. Indiana Infantry Regiment, 42nd (1861-1865).
- United States. Army. Indiana Infantry Regiment, 80th (1862-1865).
- United States. Army--Intelligence specialists.
- United States. Army. Iowa Cavalry Regiment, 3rd (1861-1865).
- United States. Army. Iowa Infantry Regiment, 23rd (1862-1865).
- United States. Army. Massachusetts Artillery Battery, 9th (1862-1865).
- United States. Army--Medical personnel.
- United States. Army--Military life.
- United States. Army. Minnesota Infantry Regiment, 4th (1861-1865).
- United States. Army. Mormon Battalion.
- United States. Army. New York Artillery. Independent Battery, 21st (1862-1865).
- United States. Army. New York Infantry Regiment, 169th (1862-1865).
- United States. Army. New York Infantry Regiment, 175th (1862-1865).
- United States. Army. New York Infantry Regiment, 177th (1862-1863).
- United States. Army. New York Light Artillery Regiment, 24th (1862-1865).
- United States. Army of the Ohio.
- United States. Army of the Potomac.
- United States. Army. Office of the Inspector General.
- United States. Army--Officers.
- United States. Army. Ohio Cavalry Regiment, 6th (1861-1865).
- United States. Army. Ohio Heavy Artillery Regiment, 2nd (1863-1865).
- United States. Army. Ohio Infantry Regiment, 110th (1862-1865).
- United States. Army. Ohio Infantry Regiment, 3rd (1861-1864).
- United States. Army. Ohio Infantry Regiment, 7th (1861-1864).
- United States. Army--Ordnance and ordnance stores.
- United States. Army--Pay, allowances, etc.
- United States. Army. Pennsylvania Infantry Regiment, 105th (1861-1865).
- United States. Army--Procurement.
- United States. Army. Quartermaster Corps.
- United States. Army. Quartermaster's Dept.
- United States. Army. Signal Corps.
- United States. Army. Signal Corps. Aviation Section.
- United States. Army--Supplies and stores.
- United States. Army. Wisconsin Infantry Regiment, 18th (1861-1865).
- United States. Army. Wisconsin Infantry Regiment, 44th (1864-1865).
- United States. Army. Women's Army Auxiliary Corps.
- United States. Army. Women's Army Corps.
- United States. Attorney-General.
- United States. Board of Indian Commissioners.
- United States. Board of Treasury.
- United States. Bureau of Alcohol, Tobacco, and Firearms.
- United States. Bureau of Corporations.
- United States. Bureau of Customs.
- United States. Bureau of Educational and Cultural Affairs.
- United States. Bureau of Internal Revenue.
- United States. Bureau of Labor Statistics.
- United States. Bureau of the Budget.
- United States. Bureau of the Budget. Federal Coordinating Service.
- United States. Bureau of the Census.
- United States Capitol Historical Society.
- United States Capitol (Washington, D.C.).
- United States. Central Intelligence Agency.
- United States. Children's Bureau.
- United States. Civil Rights Restoration Act of 1987.
- United States Civil Service Commission.
- United States. Clean Air Act.
- United States. Coast Guard.
- United States. Coast Guard. Historian's Office.
- United States Coast Survey.
- United States Commission on Civil Rights.
- United States Commission on Civil Rights. Missouri Advisory Committee.
- United States. Commission on Government Security.
- United States. Commission on Industrial Relations.
- United States. Commission on Protecting and Reducing Government Secrecy.
- United States. Comprehensive Environmental Response, Compensation, and Liability Act of 1980.
- United States. Congress.
- United States. Congress--Elections.
- United States. Congress--Elections, 1928.
- United States. Congress--Elections, 1932.
- United States. Congress --Elections--1954.
- United States. Congress--Hearings.
- United States. Congress --History--19th century.
- United States. Congress. House.
- United States. Congress. House. Committee on the Judiciary.
- United States. Congress. House. Committee on Un-American Activities.
- United States. Congress. House. Committee on Ways and Means.
- United States. Congress. House--Elections.
- United States. Congress. House--Elections--1948.
- United States. Congress. House. Office of the Speaker of the House--Correspondence.
- United States. Congress. House. Select Committee to Investigate the Federal Communications Commission.
- United States. Congress. House. Special Committee on Un-American Activities (1938-1944).
- United States. Congress--Interviews.
- United States. Congress. Joint Committee on the Conduct of the War.
- United States. Congress. Joint Committee on the Investigation of the Pearl Harbor Attack.
- United States. Congress. Joint Economic Committee.
- United States. Congress. Office of Technology Assessment.
- United States. Congress --Officials and employees.
- United States. Congress. Senate.
- United States. Congress. Senate. Committee on Commerce.
- United States. Congress. Senate. Committee on Commerce. Consumer Subcommittee.
- United States. Congress. Senate. Committee on Environment and Public Works.
- United States. Congress. Senate. Committee on Finance.
- United States. Congress. Senate. Committee on Foreign Relations.
- United States. Congress. Senate. Committee on the Judiciary.
- United States. Congress. Senate. Committee on the Judiciary. Subcommittee to Investigate the Administration of the Internal
Security Act and Other Internal Security Laws.
- United States. Congress. Senate--Elections.
- United States. Congress. Senate. Special Committee Investigating the National Defense Program.
- United States. Constitution.
- United States. Constitution. 19th Amendment.
- United States. Constitutional Convention (1787).
- United States. Continental Army--Officers.
- United States. Continental Army--Supplies and stores.
- United States. Continental Congress.
- United States. Continental Navy--Officers.
- United States. Council of National Defense. National Defense Research Committee.
- United States. Court of Appeals (2nd Circuit).
- United States. Court of Appeals (4th Circuit).
- United States. Court of Appeals (8th Circuit).
- United States. Court of Appeals (District of Columbia Circuit).
- United States. Declaration of Independence--Signers.
- United States. Depot of Charts and Instruments.
- United States. Dept. of Agriculture--Employees and officials.
- United States. Dept. of Commerce.
- United States. Dept. of Commerce. Aeronautics Trade Division.
- United States. Dept. of Commerce and Labor.
- United States. Dept. of Defense.
- United States. Dept. of Health and Human Services. Office of the Secretary.
- United States. Dept. of Health, Education, and Welfare. Office of the Secretary.
- United States. Dept. of Health, Education, and Welfare. Secretary's Advisory Committee on Traffic Safety.
- United States. Dept. of Housing and Urban Development.
- United States. Dept. of Housing and Urban Development. Office of the Secretary.
- United States. Dept. of Justice.
- United States. Dept. of Justice. Antitrust Division.
- United States. Dept. of Justice. Office of the Attorney General.
- United States. Dept. of Justice. Tax Division.
- United States. Dept. of Labor.
- United States. Dept. of Labor. Assistant for Urban Affairs.
- United States. Dept. of Labor. Office of Policy Planning and Research. Negro family : The case for national action (1965).
- United States. Dept. of Labor--Officials and employees.
- United States. Dept. of State.
- United States. Dept. of State Advisory Committee on International Organizations.
- United States. Dept. of State. Bureau of African Affairs.
- United States. Dept. of State. Office of the Assistant Secretary for Public Affairs.
- United States. Dept. of State--Officials and employees.
- United States. Dept. of State--Officials and employees, Afro-American.
- United States. Dept. of the Interior.
- United States. Dept. of the Interior--Officials and employees.
- United States. Dept. of the Treasury.
- United States. Dept. of the Treasury. Office of the Secretary.
- United States. Dept. of Treasury.
- United States. Director General of the Railroads.
- United States. District Court (District of Columbia).
- United States. District Court (Louisiana : Eastern District).
- United States. District Court (Pennsylvania : Eastern District).
- United States. Electoral Commission (1877).
- United States. Equal Employment Opportunity Commission.
- United States Exploring Expedition (1838-1842).
- United States. Fair Employment Practices Committee.
- United States. Fair Housing Amendments Act of 1988.
- United States. Farm Security Administration.
- United States. Federal Bureau of Investigation.
- United States. Federal Power Commission.
- United States. Federal Trade Commission.
- United States. Federal Trade Commission --Trials, litigation, etc.
- United States. Federal Water Pollution Control Act.
- United States. Forest Service.
- United States. Freedom of Information Act.
- United States. Housing and Home Finance Agency.
- United States Information Agency.
- United States. Intermodal Surface Transportation Efficiency Act of 1991.
- United States. Joint Army and Navy Committee on Welfare and Recreation. Sub-Committee on Music.
- United States. Joint Chiefs of Staff.
- United States. Joint Chiefs of Staff. Joint Commission on New Weapons and Equipment.
- United States. Judiciary Act of 1800.
- United States. Kansas-Nebraska Act.
- United States. Legation (France).
- United States. Legation (France) Letterbooks of the U.S. Legation, France (1779-1782).
- United States. Light-House Board.
- United States. Marine Corps.
- United States. Marine Corps--Foreign service--China--Shanghai.
- United States Military Academy.
- United States Military Academy--Students.
- United States Military Academy--Students--19th century.
- United States Mint.
- United States. Mutual Security Agency.
- United States. National Advisory Committee for Aeronautics.
- United States. National Advisory Committee for Aeronautics. Records of the U.S. National Advisory Committee for Aeronautics.
- United States. National Aeronautics and Space Administration.
- United States. National Archives and Records Administration.
- United States. National Archives and Records Service.
- United States. National Bureau of Standards.
- United States. National Commission on Product Safety.
- United States. National Commission on Space.
- United States. National Defense Advisory Commission. Committee on Women in Industry.
- United States. National Industrial Recovery Act of 1933.
- United States. National Motor Vehicle Safety Advisory Council.
- United States. National Recovery Administration.
- United States. National Security Act of 1947.
- United States. National Security Agency.
- United States. National Security Training Commission.
- United States Naval Academy.
- United States Naval Academy--Curricula.
- United States Naval Academy--Students.
- United States. Naval Asylum.
- United States. Naval Forces, Eastern Atlantic and Mediterranean.
- United States Naval Observatory.
- United States. Naval Reserve.
- United States. Naval Reserve--Officers.
- United States. Naval Training Station (Newport, R.I.).
- United States. Navy.
- United States. Navy. African Squadron.
- United States. Navy--Appropriations and expenditures.
- United States. Navy. Asiatic Fleet.
- United States. Navy. Atlantic Fleet.
- United States. Navy. Atlantic Fleet. Air Force.
- United States. Navy--Aviation.
- United States. Navy. Board of Inspection.
- United States. Navy. Carrier Division One.
- United States. Navy--Cruise, 1834-1837.
- United States. Navy--Cruise, 1854-1859.
- United States. Navy--Cruise, 1907-1909.
- United States. Navy. Cruiser Division One.
- United States. Navy Dept.
- United States. Navy Dept. Bureau of Engineering.
- United States. Navy Dept. Bureau of Ordnance.
- United States. Navy. Destroyer Squadron 11.
- United States. Navy. East India Squadron.
- United States. Navy. Fleet, 2nd.
- United States. Navy. Fleet, 6th.
- United States. Navy--Foreign service.
- United States. Navy--Foreign service--Atlantic Ocean.
- United States. Navy--Foreign service--Central America.
- United States. Navy--Foreign service--China.
- United States. Navy--Foreign service--China--Shanghai.
- United States. Navy--Foreign service--China--Yangtze River.
- United States. Navy--Foreign service--French Polynesia--Tahiti (Island).
- United States. Navy--Foreign service--Great Britain.
- United States. Navy--Foreign service--Guam.
- United States. Navy--Foreign service--Italy.
- United States. Navy--Foreign service--Japan.
- United States. Navy--Foreign service--Mediterranean Sea.
- United States. Navy--Foreign service--Oceania.
- United States. Navy--Foreign service--Pacific Ocean.
- United States. Navy--Foreign service--Philippines.
- United States. Navy--Foreign service--Puerto Rico.
- United States. Navy--Foreign service--South America.
- United States. Navy--Foreign service--West Indies.
- United States. Navy--History.
- United States. Navy--History--19th century.
- United States. Navy--History--20th century.
- United States. Navy --History--Civil War, 1861-1865.
- United States. Navy--History--Vietnam War, 1961-1975.
- United States. Navy--History--World War, 1914-1918.
- United States. Navy--History--World War, 1939-1945.
- United States. Navy. James River Flotilla.
- United States. Navy--Medals, badges, decorations, etc.
- United States. Navy. Mediterranean Squadron.
- United States. Navy--Military life.
- United States. Navy. Naval Aviation Forces.
- United States. Navy. Naval District, 11th.
- United States. Navy. Naval District, 1st.
- United States. Navy--Officers.
- United States. Navy--Officers--Correspondence.
- United States. Navy--Operational readiness.
- United States. Navy--Ordnance and ordnance stores.
- United States. Navy. Pacific Fleet.
- United States. Navy. Potomac River Flotilla.
- United States. Navy--Procurement.
- United States. Navy--Recruiting, enlistment, etc.
- United States. Navy--Sea life.
- United States. Navy. West India Squadron.
- United States. Office of Facts and Figures.
- United States. Office of Indian Affairs.
- United States. Office of Management and Budget.
- United States. Office of Price Administration.
- United States. Office of Scientific Research and Development.
- United States. Office of Scientific Research and Development. Metallurgical Laboratory.
- United States. Office of Scientific Research and Development. National Defense Research Committee.
- United States. Office of Strategic Services.
- United States. Office of the Assistant Secretary of the Navy.
- United States. Office of the Chief of Naval Operations.
- United States. Office of the Chief of Naval Operations. International Affairs Division.
- United States. Office of War Information.
- United States. Office of War Information. Overseas Operations Branch.
- United States. Patent Office.
- United States. Patent Office--Fire, 1877.
- United States Penitentiary in Leavenworth, Kansas--Periodicals.
- United States. Pension Bureau--Buildings.
- United States. Philippine Commission (1899-1900).
- United States. Post Office Dept.
- United States Postal Service.
- United States. Postmaster General.
- United States. President (1861-1865 : Lincoln). Emancipation Proclamation.
- United States. Presidential Commission on World Hunger.
- United States. President's Air Policy Commission.
- United States. President's Commission on the Status of Women.
- United States. President's Commission to Strengthen Social Security.
- United States. President's Committee on Equality of Treatment and Opportunity in the Armed Services.
- United States. President's Committee on Government Employment Policy.
- United States. President's Emergency Committee for Employment.
- United States. President's Foreign Intelligence Advisory Board.
- United States. President's General Advisory Committee on Foreign Assistance Programs.
- United States. President's Science Advisory Committee.
- United States. President's Task Force on International Education.
- United States. Public Health Service.
- United States. Reparations Mission to Japan.
- United States. Rural Electrification Administration.
- United States. Safe Drinking Water Act.
- United States Sanitary Commission.
- United States. Secret Service.
- United States. Securities and Exchange Commission.
- United States. Selective Service System.
- United States. Sherman Act.
- United States. Social Security Amendments of 1983.
- United States. Social Security Tax Cut Act of 1991.
- United States Soldiers' Home.
- United States. Solicitor General.
- United States. Special Panama Canal Commission.
- United States Strategic Air Forces in Europe.
- United States Strategic Bombing Survey.
- United States. Subversive Activities Control Board.
- United States Sugar Beet Association.
- United States. Supreme Court.
- United States. Supreme Court--History.
- United States. Supreme Court--Officials and employees.
- United States. Supreme Court--Officials and employees--Selection and appointment.
- United States. Tax Reform Act of 1986.
- United States. Temporary Emergency Court of Appeals.
- United States. Uniform Interstate Family Support Act.
- United States. Voting Rights Act Amendments of 1982.
- United States. War Dept.
- United States. War Dept. Alsos Mission.
- United States. War Dept. Bureau of Public Relations. Industrial Service Division.
- United States. War Dept. Division of Military Aeronautics.
- United States. War Dept. Military Intelligence Division.
- United States. War Dept. War Plans Division.
- United States. War Labor Policies Board.
- United States. War Production Board.
- United States. Warren Commission.
- United States. White House Office.
- United States. Wickersham Commission.
- United States. Work Projects Administration.
- United States. Works Progress Administration.
- United Steelworkers of America.
- United World Federalists (U.S.).
- Universal Negro Improvement Association.
- Universitat Wien--Students.
- Universite catholique de Louvain (1970- )--Buildings.
- Universite de Grenoble--Faculty.
- University of California (1868-1952) War Research Division.
- University of California, Berkeley. Dept. of Chemistry.
- University of California, Berkeley--Faculty.
- University of California, Los Angeles.
- University of California, San Diego.
- University of California, Santa Barbara.
- University of Central Florida.
- University of Chicago (1857-1886).
- University of Chicago Faculty.
- University of Chicago--Faculty--Correspondence.
- University of Colorado, Boulder.
- University of Missouri at Kansas City.--Faculty.
- University of Missouri--St. Louis--Students.
- University of Notre Dame.
- University of Pennsylvania.
- University of Pittsburgh. Graduate School of Public and International Affairs.
- University of Virginia.
- University of Virginia--Students.
- University of Virginia--Students--19th century.
- University of Wisconsin.
- University of Wisconsin--Students.
- Untermeyer, Bryna Ivens--Correspondence.
- Untermeyer, Jean Starr, 1886-1970.
- Untermeyer, Jean Starr, 1886-1970--Correspondence.
- Untermeyer, Louis, 1885-1977.
- Untermeyer, Louis, 1885-1977-- Correspondence.
- Updike, John.
- Updike, John--Correspondence.
- Upshur, A. P. (Abel Parker), 1790-1844--Correspondence.
- Upton, Harriet Taylor--Correspondence.
- Urban League of Pittsburgh.
- Urey, Harold Clayton, 1893-.
- Ursa, Pedro de, d. 1561.
- U.S. Army Ballistic Research Laboratory.
- U.S. Atomic Energy Commission.
- U.S. Atomic Energy Commission. General Advisory Committee.
- U.S. Atomic Energy Commission--Officials and employees.
- U.S. Naval Academy Alumni Association.
- U.S. Press Association.
- U.S.-Russia Joint Commission on POW/MIAs.
- Utah State University.
- Uttley, A. M.--Correspondence.
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