Jones, H. G. (1858). The Levering family; or, A genealogical account of Wigard Levering and Gerhard Levering, two of the pioneer settlers of Roxborough Township, Philadelphia County ... and their descendants. Philadelphia: Printed for the Author, by King & Baird.

Jones, Horatio Gates. The Levering Family; Or, A Genealogical Account of Wigard Levering and Gerhard Levering, Two of the Pioneer Settlers of Roxborough Township, Philadelphia County ... and Their Descendants. Philadelphia: Printed for the Author, by King & Baird, 1858.

Jones, Horatio Gates. The Levering Family; Or, A Genealogical Account of Wigard Levering and Gerhard Levering, Two of the Pioneer Settlers of Roxborough Township, Philadelphia County ... and Their Descendants. Philadelphia: Printed for the Author, by King & Baird, 1858.