Intercalary relations of malvinokafric and gondwana realms with tethys - correspondence/criticism, 1991 Box 14 Unit ID: 123 Date: 1991
International Geological Correlation Programme - UNESCO, 1978-1991 Box 18 Unit ID: 137 Date: 1978/1991
International Symposium on Geology of Southeast Asia and Adjacent Areas, Hanoi, Nov. 1995 Box 5 Unit ID: 48 Date: Nov. 1995
Inward correspondence (mostly from colleagues in universities and geological survey organisations), 1966-1968 Box 2 Date: 1966/1968
Inward correspondence (mostly from colleagues in universities and geological survey organisations), 1972-1976 Box 3 Date: 1972/1976