Walpole, R. (1730). Observations upon the treaty between the crowns of Great-Britain, France, and Spain, concluded at Seville on the ninth of November, 1729, N.S. printed by S. Powell, for George Risk, George Ewing, and, William Smith.

Walpole, Robert. Observations upon the Treaty Between the Crowns of Great-Britain, France, and Spain, Concluded at Seville on the Ninth of November, 1729, N.S. printed by S. Powell, for George Risk, George Ewing, and, William Smith, 1730.