Papers -- Substance P Contains working papers of J H Gaddum with respect to his work on detemining the nature of substance P. Contains a letter from Alan N Drury about his research with a vasoconstrictor substance (item 1), five graphs, experimental notes and three charts on distribution of P (items 2,3), chromatography of substance P (item 4), extracting P (item 5), concentrations of [histamine, hydroxytryptamine, tryptamine] and P in ileum and uterus, effects of [potassium] on guinea pig ileum and uterus, research and reference notes (item 6) abstract of a paper on the distribution of substance P in the nervous system by H Kopera and W Lazarini (item 7), rough draft of Gaddum paper on P (item 8), 'The Distribution of 5-hydroxytryptamine and substance P in the Central Nervous System [CNS]' by A H Amin, T B B Crawford and Gaddum (item 9); notes on pharmacologically active substances in extracts of the [CNS] (item 10); an addendum to a paper 'Pain-Producing Substance and Human Bradykinin' (item 13); papers by F Lembeck on the role of substance P in the dorsal roots (1952; item 15) and on afferent impulses (1956; item 16); 1950s