Sir Thomas Brisbane (1773 - 1860), sixth Governor of New South Wales (1821 - 1825): an autographed lettersheet, written in French and headed 'Rue des Trois Freres No.3, Paris le 1 Decembre 1818' to the Secretary of the Royal Academy of Science, and signed 'Tho. Brisbane'. The letter is to express his gratitude for the vote in favour of his appointment as an official correspondent to the Academy.