According to Hopewell Furnace ledgers from 1850-1853, Joseph Tolbert worked as a laborer for twenty-six days at a wage of ten dollars per month. In the 1860 Census of Union Township, Joseph (65), George (23), Caroline (14), Martha (9), Mary (35), and Jane (41) Tolbert lived together with George (16), Henrietta (4), Henry (11), Mary E (7), and Joshua (4) Ford, as well as John Brown (5 months). The Tolberts were listed as being born in Pennsylvania.
- United States Census, 1860, database with images, FamilySearch  : 24 March 2017, Pennsylvania > Berks > Union Township > image 9 of 53; from "1860 U.S. Federal Census - Population," database, Fold3.com (http://www.fold3.com : n.d.); citing NARA microfilm publication M653 (Washington, D.C.: National Archives and Records Administration, n.d.).
- Walker, Joseph E. 1969. A Comparison of Negro and White Labor in a Charcoal Iron Community. Labor History 10, no.3 (June): 487-497.
- Walker 1969, 494
- United States Census, 1860