This publication is a collection of information on Northumberland County, PA residents compiled into a supplement to the Federal Census records. The sources include various directories ranging from 1850 to 1869, and two maps - Northumberland County (1858) and Map of Sunbury (1869). Original sources are presented as scans or transcriptions, providing 11,400 records of Northumberland County residents. All names are listed alphabetically at the end of the publication. 352 pages.