GSL/OB/31 | Bigsby Medal awarded to Dr Drummond Hoyle Matthews | 1975 | |
LDGSL/1107/A/1/7 | California Institute of Technology (Caltech), 1969 | Apr-Jun 1969 | 
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LDGSL/1107/A/1/8 | Institute of Geophysics and Planetary Physics, University of California, 1969 | Jul-Aug 1969 | 
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LDGSL/1107/A/1/15 | General correspondence, 1975 | 1975 | 
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LDGSL/1107/A/1/25 | General correspondence, 1985 | 1985 | 
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LDGSL/1107/A/1/26 | General correspondence, 1986 | 1986 | |
LDGSL/1107/A/1/28 | General correspondence, 1988 | 1988 | |
LDGSL/1107/A/1/31 | General correspondence, 1991 | 1991 | |
LDGSL/1107/A/1/32 | General correspondence, 1992 | 1992 | 
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