In 1928, at 29 years of age, Hall appeared in the Supreme Court of Canada as counsel for the appellants in "Glenn and Babb v. Schofield". His clients were farmers who were being sued by the owner of some free-range horses. The horses had eaten a large amount of grain which had spilled from the farmers' grain bins. One of the horses died from over-eating, and others were sickened. The Supreme Court ruled that Hall's clients had taken reasonable steps to store their grain from spillage and dismissed the action against them. The case was the first of Hall's six appearances in the Supreme Court. Hall was successful in five of those cases, losing only one case. In one of his successful cases, the Supreme Court paid him the ultimate accolade for an appellate lawyer: the Court did not find it necessary to call on him in oral argument and ruled in his favour based solely on Hall's written arguments.