Essential Record Types
Census Records
US federal census records from 1790 to 1940 are publicly accessible. The 1950 census was released in 2022. Each decade captures household members, ages, birthplaces, and occupations, creating a series of snapshots that track families over time. State census records supplement federal ones in many states.
Vital Records
Birth, marriage, and death certificates are the most direct documentary evidence for genealogical facts. State vital registration began at different times — most states had mandatory registration by the early twentieth century. County and church records often predate state registration by decades.
Immigration Records
Ship passenger lists, naturalization petitions, passport applications, and border crossing records document the immigrant experience. Ellis Island records are among the most searched, but millions of immigrants arrived through other ports including Baltimore, Boston, Philadelphia, New Orleans, and San Francisco.
Military Records
Military records can provide detailed personal information not found in other sources. Service records, draft registration cards, pension files, and burial records collectively span every major American conflict from the Revolutionary War through the twentieth century. World War I draft cards alone cover 24 million men and include physical descriptions, occupations, employers, and nearest relative information. Pension files from earlier wars can contain extensive correspondence and sworn depositions describing family relationships, often naming siblings, parents, and children.
Newspaper Archives
Historical newspapers contain genealogical information not found in any official record. Obituaries, marriage announcements, birth notices, legal notices, and local news stories mention names, relationships, and biographical details. Many researchers overlook newspapers because they are not systematically indexed the way census records are, but full-text digitization has made newspaper searching increasingly practical. Major digitization projects have placed millions of newspaper pages online. When searching, try multiple surname spellings and the names of spouses, children, and siblings — family members are often mentioned in records about their relatives.
Land and Probate Records
Land records — deeds, grants, surveys, and plat maps — often predate other record types and can document family relationships through mentions of heirs, witnesses, and neighbors. Probate records, including wills, estate inventories, and administrator accounts, frequently name all children and sometimes grandchildren of a deceased person. In jurisdictions where vital records were not kept or have been lost, probate and land records may be the only surviving evidence of family connections. County courthouse records and state archives hold the majority of these records, and an increasing number have been digitized or microfilmed.
Organizing Your Research
Effective organization is as important as finding records. Maintain a research log documenting every source you search — including negative results, which prevent duplicating effort. Use a consistent naming convention for digital files. Store multiple copies of important documents including at least one off-site backup. Create a research plan for each brick wall ancestor that lists what is known, what records have already been searched, and what specific questions remain to be answered. Researchers who document their process thoroughly can resume work after long breaks, share research with family members, and avoid the common mistake of searching the same records repeatedly without realizing it.