HOUSE OF ORANGE -- WILLIAM V of Orange, (1748-1806). Letter in Dutch appointing 'Oud Burgermeester' [of Purmerend] Philippus Reinier Boon as a member of the 'Commisie in Gecommiteerde Raaden'. The Hague, 16 January 1777. 1 fold. leaf, r° only, signed. -- And 2 o., 1 of which signed by king William I (1772-1843). (3).