Formby, Henry. Monotheism in the Main Derived from the Hebrew Nation and the Law of Moses: The Primitive Religion of the City of Rome. An Historical Investigation ... London and Edinburgh: Williams & Norgate; New York: Scribner, Welford & Co.; Rome: J. Spithöver, 1877. xxxvi, 360 p.
Formby, Henry. A Compendium of the Philosophy of Ancient History. With an Appendix containing a Dissertation by E. von Lasaulx on the Study of the Classics, Translated from the German. ... London: Burns and Oates; New York: The Catholic Publication House, 1878. xvi, 174 p.,[2] p. of adv.