[Papers of C.A.J. Young, chemist, chiefly re his work on instrumentation and process control systems, 1946-1973. Comprises biographical and personal papers; papers relating to his work at ICI Central Instrument Research Laboratory; material re lectures, academic papers, publications and conferences; and correspondence. Young was Director of the C.I.R.L. from its establishment (as the Central Instrument Section in 1946) until 1971, and Technical Director to the ICI Corporate Laboratory, formed by merging C.I.R.L. at Bozedown with ICI Petrochemical and Polymer Laboratory at Runcorn, from 1971-1973. 22 boxes. Listing available]