Guides, Indexes, Reference

Britain and the World 1815-1986. A Dictionary of International Relations
DA45 .W45 1987
Guide to the Contents of the Public Record Office
CD1043 .A553 1963
Records of the Foreign Office 1782-1939
Call Number CD1051. A45 1969a
Records of the Foreign Office 1782-1968
CD 1051. A45 2002
Foreign Office and Foreign Policy, 1898-1914
JX1783 .S74
Index to the Correspondence of the Foreign Office for the Year... (1920-1951)
JX 631. A31...
List of Foreign Office Records
CD 1043 .A572

Overview of Classes
See the Foreign Office Research Guide from the British National Archives. The following print titles available at UVA provide detailed listings of the Classes and their Subdivisions:
Records of the Foreign Office 1782-1939, Call Number CD1051. A45 1969a
Records of the Foreign Office 1782-1968 (2nd ed.), Call Number CD1051. A45 2002
Guide to the Contents of the Public Record Office, Call Number CD1043 .A553 1963

British Documents - Foreign Office