Lamon, H. E. (1992). Original proceedings of the annual meetings of the descendants of the Williamson-Johnson Burial Ground: Including record of burials, 1700-- : Bensalem, Bucks County, Pennsylvania. [New Jersey]: New Jersey State Society of the National Society of the Daughters of the American Revolution, Genealogical Records Committee].

Lamon, Hazel E. Original Proceedings of the Annual Meetings of the Descendants of the Williamson-Johnson Burial Ground: Including Record of Burials, 1700-- : Bensalem, Bucks County, Pennsylvania. [New Jersey]: New Jersey State Society of the National Society of the Daughters of the American Revolution, Genealogical Records Committee], 1992.

Lamon, Hazel E. Original Proceedings of the Annual Meetings of the Descendants of the Williamson-Johnson Burial Ground: Including Record of Burials, 1700-- : Bensalem, Bucks County, Pennsylvania. [New Jersey]: New Jersey State Society of the National Society of the Daughters of the American Revolution, Genealogical Records Committee], 1992.