Published in 1987, the Second Supplement lists genealogies in the Library of Congress catalogued between January 1976 and June 1986. It supplements the two-volume Genealogies in the Library of Congress: A Bibliography (1972) and the five-year supplement, 1972-1976, published in 1977. This ten-year supplement lists 10,000 titles acquired by the Library of Congress since 1976--this extraordinary number reflecting the phenomenal growth of interest in genealogy since the publication of Roots. An index of secondary names contains about 8,500 entries, and a geographical index lists family locations when mentioned.