(1) William Nelson, ed., Documents Relating to the Colonial History of the State of New Jersey, Vol. XXI: Calendar of Records in the Office of the Secretary of State, 1664-1703 (Paterson, New Jersey: The Press Printing and Publishing Co., 1899), 61, citing East Jersey Deeds, Etc., 1 Dec 1684, Liber A:154.
(2) Charles Carroll Gardner, "Alexander," The Genealogical Magazine of New Jersey, Vol. 14, No. 2 (Apr 1939): 30.