This "Supplement to Genealogies in the Library of Congress" lists all genealogies in the Library of Congress that were catalogued between 1972 and 1976, showing acquisitions made by the Library in the five years since publication of the original two-volume Bibliography. Arranged alphabetically by family name, it adds several thousand works to the canon, clinching the Bibliography's position as the premier finding-aid in genealogy.

Thomas Thompson (d.ca. 1795) was a farmer in Lancaster County, Pennsylvania. He married Ann Finney, daughter of Joseph and Rebeccah Crispin Finney. The Finneys had originated in England and later lived for a time in Barbados. Thomas and Ann were the parents of eight children. In about 1750 they moved to Orange County, North Carolina. Their descendants lived in North Carolina, Tennessee, Kentucky, Missouri and other parts of the United States.

Includes entries for maps and atlases.