- 1850 U.S. Federal Census - Slave Schedules Free
- 1890 United States Federal Census Fragment
- 1890 Veterans Schedules
- 1930 Census of Merchant Seamen
- Agana, Guam, U.S., Passenger and Crew Lists of Arriving Vessels and Airplanes, 1948-1963
- Alabama, Naturalization Records, 1888-1991
- Alabama, Passenger Lists, 1904-1962
- Alaska Alien Arrivals, 1906-1956
- Alaska, Passenger and Crew Manifests, 1906-1963
- Alcatraz, California, U.S. Penitentiary, Prisoner Index, 1934-1963 Free
- American Protective League Correspondence, 1917-1919
- American Protective League Newsletters, 1918
- Aransas, Texas Crew Lists, 1912-1965
- Arizona, Naturalization Records, 1909-1991
- Arizona, Passenger and Crew Manifests of Airplanes, 1958-1962
- Arkansas, Naturalization Records, 1907-1968
- Atlanta, Georgia, U.S. Penitentiary, Prisoner Index, 1880-1922
- Baltimore, Passenger Lists, 1820-1964
- Baltimore, Passenger and Immigration Lists, 1820-1872
- Bermuda, Passenger and Crew Manifests, 1957-1969
- Book Indexes to Boston Passenger Lists, 1899-1940
- Border Crossings: From Mexico to U.S., 1895-1964
- Boston, 1821-1850 Passenger and Immigration Lists
- British Columbia, Canada, Border Entries and Passenger Lists, 1894-1905
- California, Chinese Arrival Case Files Index, 1884-1940
- California, Federal Naturalization Records, 1843-1999
- California, Index to Census Roll of Indians, 1928-1933
- California, Mortuary Records of Chinese Decedents, 1870-1933
- California, Passenger and Crew Lists, 1882-1959
- California, Private Land Claim Dockets, 1852-1858
- Chelsea, Massachusetts, Navy General Register of Patients, 1872-1917
- Colorado State Census, 1885
- Colorado, Passenger and Crew Manifests, 1959-1960
- Colorado, State and Federal Naturalization Records, 1868-1990
- Confederate Applications for Presidential Pardons, 1865-1867
- Connecticut, Federal Naturalization Records, 1790-1996
- Dawes Commission Index (overturned), 1896
- Detroit Border Crossings and Passenger and Crew Lists, 1905-1963
- Fargo, North Dakota, Passenger Lists, 1958
- Florida, Compiled Service Records, Florida Indian Wars, 1835-1858
- Florida, Naturalization Records, 1847-1995
- Florida, Passenger Lists, 1898-1963
- Florida, Spanish American War Compiled Service Records, 1898 Free Index
- Florida, State Census, 1885
- Fort Smith, Arkansas, Criminal Case Files Index, 1866-1900
- Fort Smith, Arkansas, Criminal Case Files, 1866-1900
- Georgia, Naturalization Records, 1893-1991
- Georgia, Passenger and Crew Lists, 1904-1962
- German Concentration Camp Records, 1946-1958
- Germany, Index of Jews Whose German Nationality was Annulled by Nazi Regime, 1935-1944 Free Index
- Hartford, Connecticut, Passenger and Crew Lists, 1957-1962
- Hawaii, Passenger Lists, 1941-1948
- Headstones Provided for Deceased Union Civil War Veterans, 1861-1904
- Honolulu, Hawaii, Index to Passengers Arriving, 1900-1952
- Honolulu, Hawaii, Passenger and Crew Lists, 1900-1959
- Idaho, Naturalization Records, 1903-1982
- Illinois, Federal Naturalization Records, 1856-1991
- Illinois, Passenger and Crew List, 1943-1963
- Illinois, State Census Collection, 1825-1865
- Index to Alien Arrivals by Airplane at Miami, Florida, 1930-1942
- Indiana, Federal Naturalization Records, 1892-1992
- Indiana, Passenger and Crew Manifests, 1957-1960
- Iowa, Federal Naturalization Records, 1856-1937
- Kansas, Federal Naturalization Records, 1865-1984
- Kansas, Registration Affidavits of Alien Enemies, 1917-1918
- Kentucky, Naturalization Records, 1906-1991
- Leavenworth, Kansas, U.S. Penitentiary, Name Index to Inmate Case Files, 1895-1936 Free
- Louisiana, Naturalization Records, 1836-1998
- Maine, Federal Naturalization Records, 1787-1991
- Maine, Passenger Lists, 1894-1962
- Maryland, Crew Lists of Vessels and Airplanes, 1910-1954
- Maryland, Federal Naturalization Records, 1795-1931
- Massachusetts Crew Lists, 1917-1943
- Massachusetts, Boston, Crew Lists, 1811-1921
- Massachusetts, Passenger and Crew Lists, 1820-1963
- Massachusetts, Passenger and Crew Lists, 1949-1957
- Massachusetts, State and Federal Naturalization Records, 1798-1950
- McNeil Island, Washington, U.S. Penitentiary, Photos and Records of Prisoners Received, 1887-1939
- Mexico, European Immigrants to USA Arriving at Vera Cruz, Mexico, 1921-1931
- Michigan Passenger and Crew Lists, 1903-1965 Free Index
- Michigan, Federal Naturalization Records, 1887-1931
- Minnesota, Crew Lists, 1929-1956
- Minnesota, Federal Naturalization Records, 1880-1920
- Minnesota, Passenger and Crew Lists, 1957-1962
- Mississippi, Compiled Service Records of Volunteer Soldiers, 1812-1815
- Mississippi, Naturalization Records, 1907-2008
- Missouri, Federal Naturalization Records, 1856-1942
- Missouri, Passenger Lists, 1958-1963
- Missouri, Western District Naturalization Index, 1840-1990
- Montana, Federal Naturalization Records, 1870-1999
- Nebraska, Federal Naturalization Records, 1890-1957
- Nebraska, State Census Collection, 1860-1885 Free Index
- Nebraska, State Census, 1885
- Nevada, Naturalization Petitions, 1956-1991
- New Hampshire, State and Federal Naturalization Records, 1832-1945
- New Jersey, Naturalization Records, 1878-1945
- New Jersey, Passenger and Crew Lists, 1956-1964
- New Mexico, Federal Naturalization Records, 1881-1983
- New Mexico, Land Records of New Spain, 1692-1846
- New Mexico, Territorial Census, 1885 Free Index
- New Orleans, Louisiana, Slave Manifests, 1807-1860 Free
- New Orleans, Passenger List Quarterly Abstracts, 1820-1875
- New Orleans, Passenger Lists, 1813-1963
- New York State, Passenger and Crew Lists, 1917-1967
- New York, Index to Petitions for Naturalization filed in New York City, 1792-1989
- New York, Naturalization Records, 1882-1944 Free Index
- New York, Passenger and Crew Lists (including Castle Garden and Ellis Island), 1820-1957
- New York, Passenger and Immigration Lists, 1820-1850
- New York, State and Federal Naturalization Records, 1794-1943
- North Carolina, Freedmen's Bureau Assistant Commissioner Records, 1862-1870
- North Carolina, Native American Census Selected Tribes, 1894-1913 Free Index
- North Carolina, Naturalization Records, 1872-1996
- North Carolina, Passenger and Crew Lists, 1958-1963
- North Dakota and Washington, Chinese Passenger Arrivals and Disposition, 1903-1944
- Official records of the Union and Confederate Armies, 1861-1865
- Ohio, Crew List Arrivals, 1929-1958
- Ohio, Naturalization Petition and Record Books, 1888-1946
- Ohio, Passenger and Crew Lists, 1952-1963
- Oklahoma and Indian Territory, Dawes Census Cards for Five Civilized Tribes, 1898-1914
- Oklahoma and Indian Territory, Indian Censuses and Rolls, 1851-1959
- Oklahoma and Indian Territory, Land Allotment Jackets for Five Civilized Tribes, 1884-1934
- Oklahoma, Creek Equalization Records, 1912-1921
- Oklahoma, Indian Land Allotment Sales, 1908-1927
- Oklahoma, Naturalization Records, 1889-1991
- Oklahoma, Territorial Census, 1890 and 1907
- Omaha, Nebraska, Passenger and Crew Manifests of Airplanes, 1958-1965
- Oregon, Naturalization Records 1865-1991
- Oregon, Passenger and Crew Lists, 1888-1963
- Passenger Lists of Vessels Arriving at Mississippi, 1903-1964
- Pennsylvania, Federal Naturalization Records, 1795-1931
- Pennsylvania, Passenger and Crew Lists, 1800-1962
- Pennsylvania, U.S. Direct Tax Lists, 1798 Free Index
- Philadelphia, Passenger and Immigration Lists, 1800-1850
- Philadelphia, Pennsylvania, Immigration Records, Special Boards of Inquiry, 1893-1909 Free Index
- Photographs of Japanese Soldiers and Allied Prisoners of War, 1942-1945
- Portland, Oregon, Chinese Immigrant Landing Records and Applications for Admission, 1882-1903
- Puerto Rico, Passenger and Crew Lists, 1901-1962
- Puerto Rico, Records of Foreigners, 1815-1845
- Puerto Rico, Registro Central de Esclavos, 1872 Free
- Puerto Rico, Social and Population Schedules, 1935-1936
- Puerto Rico, Special Censuses, Agricultural Schedules, 1935
- Registers of Patients at Naval Hospitals, 1812-1934
- Reports of Deaths of American Citizens Abroad, 1835-1974
- Rhode Island, Indexes to Naturalization Records, 1890-1992
- Rhode Island, State and Federal Naturalization Records, 1802-1945
- Salem and Beverly, Massachusetts, Crew Lists and Shipping Articles, 1797-1934
- San Diego, California, Airplane Passenger and Crew List Arrivals, 1929-1954
- San Francisco, California, Chinese Passenger Arrivals and Disposition, 1903-1947
- San Francisco, California, Immigration Office Minutes, 1899-1910
- San Francisco, California, Registers of Chinese Laborers Returning to the U.S., 1882-1888
- San Francisco, California, Surrendered Alien Certificates, 1906-1946
- Seattle and Tacoma, Washington, Passenger and Crew Lists of Airplane Departures, 1947-1957
- Selected African Americans in Delaware, 1890 U.S. Census
- Sioux Falls, South Dakota, Passenger Manifests of Airplanes, 1958-1961
- South Carolina, Naturalization Records, 1868-1991
- South Carolina, Passenger Lists, 1906-1962
- South Dakota, Federal Naturalization Records, 1904-1928
- Spanish West Florida, Archives of the Spanish Government, 1782-1816 Free Index
- St. Croix, U.S. Virgin Islands, Free Colored Censuses, 1815-1832
- Stars and Stripes Newspaper, Europe, Mediterranean, and North Africa Editions, 1942-1964
- Stars and Stripes Newspaper, Pacific Editions, 1945-1963
- Tennessee Valley Cemetery Relocation Files, 1933-1990
- Tennessee, Naturalization Records, 1888-1992
- Tennessee, Passenger and Crew Manifests of Airplanes Arriving at Memphis, 1958-1961
- Texas, Naturalization Records, 1852-1991
- Texas, Passenger Lists, 1893-1963
- U.S. Army Indian Campaign Service Records Index, 1815-1858
- U.S. Army, Register of Enlistments, 1798-1914
- U.S. Circuit Court Criminal Case Files, 1790-1871
- U.S. Compiled Revolutionary War Military Service Records, 1775-1783
- U.S. Compiled Service Records, Post-Revolutionary War Volunteer Soldiers, 1784-1811
- U.S. Enumeration District Maps and Descriptions, 1940 Free
- U.S. Federal Census - 1880 Schedules of Defective, Dependent, and Delinquent Classes
- U.S. Federal Census Mortality Schedules, 1850-1885 Free Index
- U.S. IRS Tax Assessment Lists, 1862-1918
- U.S. Marine Corps Muster Rolls, 1798-1958
- U.S. Military Burial Registers, 1768-1921
- U.S. Military and Naval Academies, Cadet Records and Applications, 1800-1908
- U.S. National Cemetery Interment Control Forms, 1928-1962
- U.S. National Homes for Disabled Volunteer Soldiers, 1866-1938
- U.S. Naturalization Record Indexes, 1791-1992 (Indexed in World Archives Project) Free Index
- U.S. Naturalization Records Indexes, 1794-1995
- U.S. Navy Muster Rolls, 1949-1971
- U.S. Navy Pensions Index, 1861-1910
- U.S. Passport Applications, 1795-1925
- U.S. Returns from Regular Army Infantry Regiments, 1821-1916
- U.S. Returns from Regular Army Non-Infantry Regiments, 1821-1916
- U.S. Revolutionary War Miscellaneous Records (Manuscript File), 1775-1790s
- U.S. Southern Claims Commission, Disallowed and Barred Claims, 1871-1880 Free Index
- U.S. Subject Index to Correspondence and Case Files of the Immigration and Naturalization Service, 1903-1959 Free Index
- U.S. Virgin Islands, Applications for Travel Identification Cards, 1918
- U.S. Virgin Islands, Danish West Indies Slave Records, 1672-1917 Free
- U.S. Virgin Islands, Passenger Arrivals Index, 1906-1947
- U.S. Virgin Islands, Passenger Lists, 1885-1962
- U.S. WWII Draft Cards Young Men, 1940-1947
- U.S. WWII Hospital Admission Card Files, 1942-1954
- U.S. War Bounty Land Warrants, 1789-1858
- U.S. World War I Mothers' Pilgrimage, 1929 Free Index
- U.S. World War II Navy Muster Rolls, 1938-1949
- U.S., "Happy Days" Newspaper of the Civilian Conservation Corps, 1933-1940
- U.S., Album of Criminals, 1906 Free Index
- U.S., Alien Draft Registrations, Selected States, 1940-1946
- U.S., American Protective League Members Record Cards and Registers of Members, 1917-1919
- U.S., American Red Cross Nurse Files, 1916-1959
- U.S., Applications for Authorization for Inter-Island Travel, 1947-1952
- U.S., Applications for Seaman's Protection Certificates, 1916-1940
- U.S., Appointments of U. S. Postmasters, 1832-1971 Free Index
- U.S., Army Transport Service, Passenger Lists, 1910-1939
- U.S., Atlantic Ports Passenger Lists, 1820-1873 and 1893-1959
- U.S., Border Crossings from Canada to U.S., 1895-1960
- U.S., Buffalo Soldiers, Returns From Regular Army Cavalry Regiments, 1866-1916 Free Index
- U.S., Burial Registers, Military Posts and National Cemeteries, 1862-1960
- U.S., Cherokee Baker Roll and Records, 1924-1929 Free Index
- U.S., Chinese Immigration Case Files, 1883-1924
- U.S., Citizenship Affidavits of US-born Seamen at Select Ports, 1792-1869 Free Index
- U.S., Citizenship Case Files in Indian Territory, 1896-1897 Free Index
- U.S., Civil War Draft Registrations Records, 1863-1865
- U.S., Civil War Pension Index: General Index to Pension Files, 1861-1934
- U.S., Civil War Prisoner of War Records, 1861-1865 Updated
- U.S., Civil War and Later Wars Index to Remarried Widow Pension Applications, 1848-1934
- U.S., Colored Troops Military Service Records, 1863-1865
- U.S., Compiled Military Service Records for American Volunteer Soldiers, Mexican War, 1845-1848 Free Index
- U.S., Confederate Army Casualty Lists and Reports, 1861-1865
- U.S., Confederate Service Records, 1861-1865
- U.S., Confederate Soldiers Compiled Service Records, 1861-1865
- U.S., Consular Registration Applications, 1916-1925
- U.S., Consular Registration Certificates, 1907-1918
- U.S., Consular Reports of Births, 1910-1949
- U.S., Consular Reports of Marriages, 1910-1949 Free Index
- U.S., Deaths in the U.S. Naval Service, 1861-1867
- U.S., Definitive List of Slaves and Property, 1827-1828 Free
- U.S., Departing Passenger and Crew Lists, 1914-1966
- U.S., Descriptive Lists of Colored Volunteer Army Soldiers, 1864 Free Index
- U.S., F.B.I. Deceased Criminal Identification Files, 1971-1994
- U.S., Final Accountability Rosters of Evacuees at Relocation Centers, 1942-1946
- U.S., Freedman's Bank Records, 1865-1874 Free Updated
- U.S., Freedmen's Bureau Records of Field Offices, 1863-1878 Free
- U.S., Freedmen’s Bureau Marriage Records, 1846-1867
- U.S., General James Wilkinson's Order Book, 1796-1808 Free Index
- U.S., Headstone Applications for Military Veterans, 1925-1963
- U.S., Headstone and Interment Records for U.S. Military Cemeteries on Foreign Soil, 1942-1949
- U.S., Homestead Records, 1863-1908
- U.S., Identification Card Files of Prohibition Agents, 1920-1925
- U.S., Index to Alien Arrivals at Canadian Atlantic and Pacific Seaports, 1904-1944
- U.S., Index to Alien Case Files at the National Archives at Kansas City, 1944-2003
- U.S., Index to General Correspondence of the Record and Pension Office, 1889-1904
- U.S., Indexed Early Land Ownership and Township Plats, 1785-1898
- U.S., Indian Census Rolls, 1885-1940
- U.S., Korean War Casualties, 1950-1957
- U.S., Life Saving Medals Awarded, 1876-1944
- U.S., List of Interred Soldiers of the U.S. Army, 1827-1889
- U.S., Lists of Men Ordered to Report to Local Board for Military Duty, 1917–1918
- U.S., Lists of Merchant Seamen Lost in WWI, 1914-1919
- U.S., Merchant Marine Applications for License of Officers, 1914-1949
- U.S., National Register of Scientific and Technical Personnel, 1921-1970
- U.S., Native American Applications for Enrollment in Five Civilized Tribes (overturned), 1896
- U.S., Native American Applications for Enrollment in Five Civilized Tribes, 1898-1914
- U.S., Native American Citizens and Freedmen of Five Civilized Tribes, 1895-1914
- U.S., Native American Enrollment Cards for the Five Civilized Tribes, 1898-1914
- U.S., Naturalization Records, 1840-1957 Free Index
- U.S., Naval Hospital Tickets and Case Papers, 1825-1889
- U.S., Naval Intelligence Personnel Duty Locations and China Muster Rolls, 1942-1945
- U.S., Navy Burial Records, 1898-1932
- U.S., Navy and Marines Awards and Decorations, 1942-1994
- U.S., Pardons Under Amnesty Proclamations, 1865-1869
- U.S., Passenger and Crew Lists for U.S.-Bound Vessels Arriving in Canada, 1912-1939 and 1953-1962
- U.S., Petitions of the Jewish People's Committee, 1938
- U.S., Photographs of Military Ships by the Bureau of Ships, 1914-1946
- U.S., Railroad Retirement Pension Index, 1934-1987
- U.S., Ratified Indian Treaties and Chiefs, 1722-1869
- U.S., Records Related to Enrollment of Eastern Cherokee by Guion Miller, 1908-1910
- U.S., Records of Aliens Pre-Examined in Canada, 1904-1954
- U.S., Register of Colored Troop Deaths During the Civil War, 1861-1865
- U.S., Registers of Deaths in the Regular Army, 1860-1889
- U.S., Registers of Deaths of Volunteers, 1861-1865
- U.S., Registration Certificates - Widows, Divorced Women, & Minors, 1907-1914
- U.S., Residents Serving in Canadian Expeditionary Forces, 1917-1918
- U.S., Residents Serving in the British Expeditionary Forces, 1917-1919
- U.S., Returns from Military Posts, 1806-1916 Free Index
- U.S., Returns of Killed and Wounded in Battles, 1790-1844 Free Index
- U.S., Revolutionary War Pension and Bounty-Land Warrant Application Files, 1800-1900
- U.S., Revolutionary War Pensioners, 1801-1815, 1818-1872
- U.S., Revolutionary War Rolls, 1775-1783
- U.S., Schedules of Special Census of Indians, 1880 Free Index
- U.S., Select Crew Lists and Manifests, 1903-1962 Updated
- U.S., Selected Federal Census Non-Population Schedules, 1850-1880
- U.S., Southeast Coastwise Inward and Outward Slave Manifests, 1790-1860 Free
- U.S., Southeast Region Farm Ownership Case Files, 1938–1946
- U.S., Southern Claims Commission Allowed Claims, 1871-1880
- U.S., Spanish American War Volunteers Index to Compiled Military Service Records, 1898 Free Index
- U.S., Tennessee Valley, Family Removal and Population Readjustment Case Files, 1934-1953
- U.S., Union Provost Marshals' Papers, 1861-1867
- U.S., Union Soldiers Compiled Service Records, 1861-1865
- U.S., Vietnam War Military Casualties, 1956-1998
- U.S., War Department, Press Releases and Related Records, 1942-1945 Free Index
- U.S., War of 1812 Service Records, 1812-1815
- U.S., World War I Draft Registration Cards, 1917-1918
- U.S., World War I Soldier Naturalizations, 1918
- U.S., World War II Army Enlistment Records, 1938-1946 Updated
- U.S., World War II Cadet Nursing Corps Card Files, 1942-1948
- U.S., World War II Draft Registration Cards, 1942
- Utah, Federal Naturalization Records, 1906-1930
- Vancouver, British Columbia, Manifests of Chinese Arrivals, 1906-1912, 1929-1941
- Vermont, State and Federal Naturalization Records, 1790-1954
- Virginia, Federal Naturalization Records, 1901-1938
- Virginia, Passenger and Crew Lists, 1904-1963
- War of 1812 Papers, 1789-1815
- War of 1812 Pension Application Files Index, 1812-1815
- War of 1812, Prisoner of War Records, 1812-1815
- Washington County, D. C., Indentures of Apprenticeship, 1801-1811 Free Index
- Washington County, Ohio, US Territorial Census Population Schedules, 1803
- Washington D. C., Military Naturalization Petitions, 1918-1924
- Washington D.C., Ex-Slave Pension Correspondence and Case Files, 1892-1922 Free
- Washington D.C., Habeas Corpus Case Records, 1820-1863
- Washington, D.C., Passenger and Crew Lists, 1942-1962
- Washington, D.C., Slave Emancipation Records, 1851-1863 Free
- Washington, D.C., Slave Owner Petitions, 1862-1863 Free
- Washington, Enrollment and Allotment Applications of Washington Indians, 1911-1919 Free Index
- Washington, Passenger and Crew Lists, 1882-1965
- Washington, Petitions for Naturalization, 1860-1991
- Wisconsin Crew Lists, 1925-1969
- Wisconsin, Federal Naturalization Records, 1848-1992
- Wisconsin, Passenger and Crew Lists, 1922-1963
- World War II Japanese-American Internment Camp Documents, 1942-1946
- World War II Prisoners of the Japanese, 1941-1945
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