LDGSL/1107/A/1/7 | California Institute of Technology (Caltech), 1969 | Apr-Jun 1969 | 
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LDGSL/1107/A/1/9 | Cambridge University, 1969 | Sep-Dec 1969 | 
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LDGSL/1107/A/1/12 | General scientific correspondence, 1972 | 1972 | 
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LDGSL/1107/A/1/16 | General correspondence, 1976 | 1976 | |
LDGSL/1107/A/1/18 | General correspondence, 1978 | 1978 | |
LDGSL/1107/A/1/25 | General correspondence, 1985 | 1985 | 
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LDGSL/1107/C/5 | Photographs of Dan McKenzie in China | [Apr-May 1977] | 
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