- An Historical Inquiry Into the Production and Consumption of the Precious Metals; Volume 1
- Travels in the South of Spain, in Letters Written A.D. 1809 and 1810
- An Historical Inquiry Into the Production and Consumption of the Precious Metals, Volume 2
- Considerations on the Protection Required by British Agriculture: And on the Influence of the Price of Corn on Exportable Productions
- A View of the Agriculture, Manufactures, Statistics, and State of Society, of Germany: And Parts of Holland and France. Taken During a Journey Through Those Countries, in 1819