- A Dissertation On The Course And Probable Termination Of The Niger
- A Letter To The Publisher Of The Quarterly Review: And Of A Dissertation On The Course And Probable Termination Of The Niger (1829)
- A Letter On the Government of the Cape of Good Hope, and On Certain Events Which Have Occurred There of Late Years, Under the Administration of Lord ... Addressed Most Respectfully to Earl Bathurst
- A Letter On the Government of the Cape of Good Hope, and On Certain Events Which Have Occurred There of Late Years, Under the Administration of Lord ... Addressed Most Respectfully to Earl Bathurst
- A Letter On the Government of the Cape of Good Hope, and On Certain Events Which Have Occurred There of Late Years, Under the Administration of Lord C






