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North America, United States, Alaska, Mount McKinley, Solo of the Cassin Route

Without the help of many people other than the Editorial Board, it would be impossible to publish this section. We are very grateful to all who have been of such great help, though we can not mention all of them here. We do however want to thank especially Dr. Adolf Diemberger, Michael Cheney, Kamal K. Guha, Soli S. Mehta, Ichiro Yoshi- zawa, José Paytubi, César Morales Arnao, Vojslav Arko, Mario Fantin, Lucien Devies, Marek Brniak, Andrzej Kus, Ken Wilson, David Ed- mundson, Ramón Bramona Rams and Anders Bolinder.

Mount McKinley, Solo of the Cassin Route. Charlie Porter made a remarkable solo ascent of the Cassin route on the south face of McKinley. He is reported to have been in the area for two weeks and four days on the final climb. He is said to have taken only 36 hours in a single push from the top of the Japanese Couloir. With his usual reticence, Porter has given us no details.