found: His A declaration of the true causes, 1977:t.p. (Richard Verstegan)
found: His A restitution of decayed intelligence, 1634:t.p. (R.V.) pref. signed (Richard Verstegan)
found: InU/Wing STC files(usage: Richard Rowlands)
found: DNB(Rowlands, alias Verstegen, Richard, fl. 1565-1620; antiquary)
found: Bib. nat.(Verstegan, Richard, pseud. of Richard Rowlands)
found: BM(Verstegan, Richard, the Elder)
found: Grote Winkler Prins, 1974(Verstegen, Richard; b. London ca. 1550; d. Antwerp 1640)
found: Grote Winkler Prins, 1954(d. shortly after 2/26/1640)
found: NUC pre-1956(Verstegen, Richard, ca. 1548-1640)
found: LC data base, 5/15/85(hdg.: Verstegen, Richard, 1548 (ca.)-1640; usage: Richard Verstegan; Richard Rowlands)
found: Pollard & Redgrave. A short-title cat. 1475-1640, 1986:vol. 1, p. 50, p. 612 (The copy of a letter, lately vvritten by a Spanishe gentleman, to his freind in England, 1589, is not a translation by I.B., but is fiact written by Verstegan and others)
found: His The copy of a letter lately vvritten by a Spanishe gentleman, to his freind in England, 1589:leaf E2r (I.B.)
found: Halkett & Laing, Dict. of anon. & pseudo. English lit., 3rd. ed., 1475-1640, 1980:p. 44 (The copy of a letter, lately vvritten by a Spanishe gentleman, to his freind in England is by Richard Verstegan and others)
found: Allison, A.F. The contemporary printed literature of the English Counter-reformation, 1994: v. 2, no. 758 (The copie of a letter "is signed by I.B. ... Really written in English [by Verstegan and others, Verstegan being the principal author]")
found: Wikipedia, 30 May 2007:under Richard Rowlands (Richard Rowlands, circa 1550-1640, Anglo-Dutch antiquary whose real name was Verstegen, usually anglicized Verstegan)