Myers, William Starr. Prominent Families of New Jersey, Volume 1, p. 221. Genealogical Publishing Company, 2000.Accessed August 15, 2022. "Captain and Mrs. Mathis have become the parents of a son: W. Steelman, who was born at Tuckerton, New Jersey, on December 1, 1898, and, after graduating from the Toms River High School, attended Peddie Institute and the Peirce Business College at Philadelphia."
Manual of the Legislature of New Jersey, Volume 189, p. 375. J.A. Fitzgerald, 1965. "William Steelman Mathis (Rep., Toms River) Senator Mathis was born in Tuckerton, December 1, 1898. He graduated from Peddie School and afterward took course at the Peirce Business College of Philadelphia."