[MONARCHS & SOVEREIGNS]. ALEXANDER I, Emperor of Russia. Printed document signed, St. Petersburg, 1810, 1 page, oblong 4to, ON VELLUM with engraved border, an official appointment -- FREDERICK WILLIAM III, King of Prussia. Letter signed, Paris, 16 July 1815, 1 page, 4to,, expressing gratitude for loyalty -- KARL XIII, King of Sweden. Letter signed to NAPOLEON, Stockholm, 25 April 1811, 3 pages, 4to,, congratulating him on the birth of his son, the King of Rome -- PIUS VII, Pope. Letter signed to the "Consoli e Sindaci di Massa Lombarda," Imola, 21 November 1789, 1 page, 4to, paper seal,, the Pope who later crowned Napoleon Emperor -- WILLEM I, King of the Netherlands. Autograph note signed, The Hague, 9 July 1814, 1 page, oblong 4to, on a captain of the Army. (5)