'The role of metals in intracellular reactions, Recent advances in the knowledge of the fundamental part played in the human organism by the lesser understood minerals'.
Written by Jean Perrin and signed by the author’s son, Francis Perrin, and by Prof Jean Langevin, son of Prof Paul Langevin. With signed explanation of signatures by Dr Riley
'From Dream to Discovery on being a Scientist'. Signed by the author, Hans Selye and his colleagues in Montreal on the occasion of Dr Riley's lecture there in 1966
Biography, with inscription, 1967, by the author L Pearce Williams praising Riley's book 'The Hammer & the Anvil' . Also letter noting confirming Williams signed it in the Royal Institution.