(1) Richard J. Cox, "Servants at Northampton Forge, Baltimore County, Maryland," National Genealogical Society Quarterly, Vol. 63 (1975): 110-117.
(2) R. Kent Lancaster, "Almost Chattel: The Lives of Indentured Servants at Hampton-Northampton, Baltimore County," Maryland Historical Magazine, Vol. 94, No. 3 (Fall 1999), citing Maryland Gazette.