The Report and Memoranda of the Commission were published on the 2nd of December 1910.
Carriers were forbidden to keep any accounts, records or memoranda other than those approved by the Commission.
A collection of his diaries, correspondence and memoranda is in the British Museum.
His Political Memoranda were edited by Oscar Browning for the Camden Society in 1884, and there are eight volumes of his official correspondence in the British Museum.
It was not till the 19th of January 1826 that he recorded in the private memoranda begun by him in 1820 his decision "to embrace the gift of the Spanish subject."