 He was elected to the Prussian Academy of Sciences in 1805.Over the years other learned societies in the U.S. elected him a member, including the American Antiquarian Society (Worcester, MA) in 1816; the Linnean Society of London in 1818; the New York Historical Society in 1820; a Foreign Honorary Member of the American Academy of Arts and Sciences in 1822.; the American Ethnological Society (New York) in 1843; and the American Geographical and Statistical Society, (New York) in 1856.He was elected a foreign member of the Royal Swedish Academy of Sciences in 1810.