On a train in Switzerland
possibly after his ascent of the Matterhorn

At the summit of Harter Fell
Dunnerdale in the English Lake District

At the 1926 EMS colloquium in St Andrews

At the 1930 EMS colloquium in St Andrews

At the 1934 EMS colloquium in St Andrews

At the 1938 EMS colloquium in St Andrews

At the 1951 EMS colloquium in St Andrews