Records of research establishmentsWO 1881916-1997War Office, Ministry of Supply, Ministry of Defence: Chemical Defence Research Department and Chemical Defence Experimental Establishment, later Chemical and Biological Defence Establishment, Porton: Correspondence and Papers
Records of the Chemical Defence Research Department, and successors, dealing with experiments on and trials of chemical and biological weapons and protective devices carried out at Porton and other experimental establishments, and general papers on chemical and biological warfare in Britain and overseas.
A few early records originated in the Ministry of Munitions.
Many pieces contain photographs and technical drawings.