Presentation of PIPSC Gold Medal to Andrew Thomson - May 22,
1952
l to r: Dr. OM Solandt, JS McGiffin (Secretary-Treasurer, PIPSC),
Andrew Thomson, H McLeod (President, PIPSC), Hon. Paul Martin (Sr),
Hon.
Lester B Pearson.
(originally published in Atmosphere, volume 11, no. 4 1973)