An Introductory Lecture on Political Economy 1827] Three Lectures on the Transmission of the Precious Metals 1828] Two Lectures on Population with a Correspondence Between the Author and T.R. Malthus 1829] Three Lectures on the Cost of Obtaining Money 1830] Two Letters on the Factory Acts 1837] Three Lectures on the Value of Money 1840] Four Introductory Lectures on Political Economy 1852]