The "Index to the Tithables of Loudoun County Virginia and to Slaveholders Hopkins HC" is a hardcover book authored by Margaret Lail Hopkins. This book serves as a reference for those interested in business & economics, history, and social science, specifically focusing on genealogy, slavery, and taxation in Loudoun County, Virginia during the late 18th century. With 156 pages, this reprint publication from Genealogical.Com offers detailed information about slaveholders and slaves in the region, making it a valuable resource for those studying African American studies and the history of the United States South.