Postcard featuring drawings of Fort Garry gate and Seven Oaks monument
Eddie Wachal reading potentiometer at Transcona thermocouple
Warnock Hersey Co. setting up Transcona thermocouple
Paul Harland building thermocouple
Warnock Hersey Co. lab at Brandon
Jack Johnston holding equipment in snow
Tension test on test slab for post office
Thermocouple on C-6
Jack Johnston working on thermocouple in Brandon
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