Folder A.4.1: Coulson's 60th birthday conference in Oxford, April 1971. Includes lists of guests and participants, and greetings from friends and colleagues. Folder A.4.2: Celebration of publications of 100 papers by Department of Theoretical Physics, King's College, London, 1951. Includes correspondence, accounts, lists of guests, and souvenirs. Folder A.4.3: 'Reunion colloquium and travel claims' regarding One-day Symposium of Wave Mechanics and Quantum Theory…