Only seventeen states can boast of a federal census in 1790, and Pennsylvania was one of the largest. Actually the records for six of those seventeen states were destroyed when the capitol was burned in 1812. The records printed in this volume include the name of every white male over the age of sixteen (living in Pennsylvania), and lists by column the number of white males as heads of households over the age of 16, white males under 16, white females (including heads of families), all other free persons, and slaves. Tells you where your ancestor was living in 1790. (426pp. hardcover. James Good, 1998.)