In 1932, Allen Carpé, a research engineer with Bell Laboratories in New York who was also an accomplished mountaineer, received a grant to collaborate with Nobel Prize-winning physicist Arthur Compton on investigating cosmic rays in Alaska. Compton was organizing expeditions to measure the rays in locations around the world, and Carpé was tasked with putting together a group that would test their measurements at 11,000 feet on Muldrow Glacier, which sits on the flanks of Alaska’s Mount McKinley. To give his climb a greater chance of success, Carpé decided to do something unheard of at the time and contacted aviation companies in Alaska to discuss the viability of landing on the glacier.