39 tape cartridges (DC300XL) and 60 half inch magnetic tapes in canisters

39 tape cartridges (DC300XL) and 60 half inch magnetic tapes in canisters, as used in the Biosignal Laboratory at the Institute of Psychiatry, London, England, established by Professor Hans Eysenck and Dr Paul Barrett to conduct investigations into the relationship between psychophysical and psychometric measures, 1988-1994.