SB indicates sub-basement location.
Encyclopedia of Post Colonial Studies Ref PN 849 U43 E535 2016
Historical Dictionary of the British Empire Ref DA 16 P315 2015
Oxford Companion to British History Ref DA 34 O93 1997
Oxford Companion to Black British History Ref DA 125 N 4094 2007 SB
Oxford Illustrated History of the British Army Ref DA 50 O94 1994
Oxford World History of Empire Ref JC 359 O939 2021