Folder C.15.1: Randic, Milan, 1960-1974

Folder C.15.2: Richards, W. Graham, 1972

Folder C.15.3: Rideal, Eric Keightley, 1951-1954

Folder C.15.4: Riley, Harry Lister, 1942-1948

Folder C.15.5: Risser, William Leigh, 1963-1968

Folder C.15.6: Riter, John R., 1970-1971

Folder C.15.7: Rivail, Jean-Louis, 1965-1973

Folder C.15.8: Robb, Michael A., 1969-1971

Folder C.15.9: Roberts, John D., 1952-1954, 1961

Folder C.15.10: Robertson, Gerald N. van der, 1964-1968

Folder C.15.11: Robertson, Gerald N. van der, 1969-1974

Folder C.15.12: Roberts, P. John, 1965-1971