Eyewitness to horror on the Eiger: I trained my telescope on the notorious 'Murder Wall'...was that a body I could see falling and twisting through the air? | Daily Mail Online
North Face (2008) - IMDb
Tragedies on the mountain: The Eiger 1936 - Wired For Adventure
The White Spider - Wikipedia
The "Wild & Tough" San Juan Mountaineers
Eyewitness to horror on the Eiger: I trained my telescope on the notorious 'Murder Wall'...was that a body I could see falling and twisting through the air? | Daily Mail Online
Ice Blades - History and Technology – Grivel
The story of the first ascent of the Matterhorn - Telegraph
1936 Eiger Disaster | Eiger North Face | Climbing the murder wall | The Wall of Death - YouTube