[6] He was involved in numerous other first ascents, including Mount French 3,244-metre (10,643-foot) in the Spray Mountains range of the Canadian Rockies (1921).
[c] Mount Queen Bess 3,298 m (10,820 ft), one of the principal summits of the Pacific Ranges of the Coast Mountains, with the Mundays in 1942.
[16] Then in June 1947 Hall visited the Muskwa Ranges with Noel Odell, Frank Smythe and others, where they made the first ascent of Mount Lloyd George 2,938 m (9,639 ft).
[21] On 29 July they managed to reach 12,650 ft. via the North Ridge but a storm was approaching and, with the summit only a little over 1000ft higher and just half a mile away, they decided they should descend to safety.
On August 1 the party made another attempt, Hall remained in camp but the others were successful in making the first ascent of Mount Hayes.
[5] In 1941, as part of the leadership of the American Alpine Club, he was involved in convincing General George Marshall that the United States needed trained mountain troops so that the war could be won in Europe and perhaps elsewhere.
[1] Hall was a supporter of the American Alpine Club Library[1] which was established in 1916[26] and is now regarded as "one of the world’s finest collections of mountain-related artifacts, archives, rare books, maps, and media".