Federal Census records are available to the public 72 years after they are taken.
City Directories provide names and occupations of town residents and much local business information.
Probate records refer to wills, inventories, letters of administration and guardianship. They are usually held at the county courthouse unless archived and they are indexed by the name of the testator.
X chromosome: One of the two sex chromosomes, X and Y. The X chromosome is passed down from mother to child. X is the sex chromosome that is present in both sexes, singly in males and doubly in females.
The 1900 and 1910 censuses lists the number of children that were born to each woman and how many were still living at the time of the census.