(1) Lloyd Dewitt Bockstruck, "Passenger Lists of the Ship Charming Mary to Essex County, Virginia," The Virginia Genealogist, Vol. 26 (1982): 219-220, quoting Essex County, Virginia Order Book 29, 1773-1782, pp. 450-451.
(2) Laura R. Pickering-Polstra, "Wm Pickering to VA in 1764 from London," Virginia Genealogy Forum, Genealogy.com.