Official papers deriving from administrative procedures of central government, comprising manuscript copies and published versions of speeches, addresses and official letters, 1621-1868, Acts of Parliament and bills, 1656-1887, petitions and cases [1660]-1781, proclamations, 1671-1694, a 'claim to a barony' [1689]-1800, lists of ministers and MPs., [1766]-1837 and miscellaneous political papers, 1581-[c. 1720].