In addition to the census population count, there are a number of special censuses: Slave, Industry & Manufacturing, Agriculture, Mortality, Social Statistics, Union Veteran and Widow, Defective, Dependent and Delinquent.
Y chromosome: One of the two sex chromosomes, X and Y. The Y chromosome passes down from father to son. Females do not receive it. As the Y chromosome is passed on through the paternal line, it is valuable for surname based genealogy studies.
An acre is a square measure of land containing 10 square chains, 160 square rods, or 43,560 square feet.
The Bureau of Land Management is a Federal government office with responsibility for buying, selling and managing public lands.
Federal Census records are available to the public 72 years after they are taken.