Boolean [Bool·e·an ] logic refers to the logical relationship among search terms, and is named for the British-born Irish mathematician George Boole.
The first step is to examine indexes to compiled records on microfilm at the National Archives.
The Latin word "sic" used in a transcription indicates the preceding word has been transcribed exactly from the original.
Soundex is a system of coding names for the census based on sound rather than alphabetical spelling.
A widow's dower is her claim to a portion of her deceased husband's estate during her lifetime for her and her children's support.
Keep track of the various ways your family names are spelled.
Obituaries tell you the name of the deceased, the year of birth and location.