Items H.1.1 and H.1.2: two loose-leaf notebooks containing printed notices and programmes for Coulson's departmental 'coffee party' talks, colloquia in atomic and molecular structure, and seminars in quantum theory. 1953-1973. Items H.1.3 and H.1.4: Distribution of reprints. Two notebooks containing lists of Coulson's reprints and of the recipients, with some correspondence regarding requests to be put on the mailing list. Item H.1.5: 'Problems Book'. Bound notebook…